University of Technology

 Poznan University of Technology, Institute of Mathematics
       ul. Piotrowo 3A, 60-965 PoznaŮ,
       e-mail: fascicul.math@put.poznan.pl

Institute of Mathematics



Number 60. (2018)

Number 59. (2017)

Number 58. (2017)

Number 57. (2016)

Number 56. (2016)

Number 55. (2015)

Number 54. (2015)

Number 53. (2014)

Number 52. (2014)

Number 51. (2013)

Number 50. (2013)

Number 49. (2012)

Number 48. (2012)

Number 47. (2011)

Number 46. (2011)

Number 45. (2010)

Number 44. (2010)

Number 43. (2010)

Number 42. (2009)

Number 41. (2009)

Number 40. (2008)

Number 39. (2008)

Number 38. (2007)

Number 37. (2007)

Number 36. (2005)

Number 35. (2005)

Number 34. (2004)

Number 33. (2002)

Number 32. (2001)

Number 31. (2001)

Number 30. (1999)

Fasc. Math. No. 60 (2018)

ANASTASSIOU G.A.– Approximation by Max-product operators5
BANU B.U., YOUVARAJ G.P.– Radius of convexity of sections of a class of close-to-convex functions of order α29
CICHO— K., CICHO— M., SATICO B.– On regulated functions37
KASHURI A., LIKO R.– Some new Hermite-Hadamard type inequalities via
k-fractional integrals concerning differentiable generalized relative
semi-(r; m, p, q, h1 , h2 ) -preinvex mappings
KHOMDRAM B., ROHEN Y.– Some common coupled fixed point theorems in
Sb - metric spaces
£ENSKI W., SZAL B.– Pointwise convergence of Fourier-Laguerre series of integrable functions93
MOJDEH D.A., EMADI A.S.– Connected domination polynomial of graphs103
EL-DEEB A.A., ELSENNARY H.A., NWAEZE E.R.– Generalized weighted Ostrowski, Trapezoid and GrŁss type inequalities on time scales123
SAKER S.H., ABDOU D.M., KUBIACZYK I.– Opial and Půlya type inequalities via convexity145
S÷G‹TC‹ E.K., AYDIN N., G÷LBA™I ÷.– Remarks on *-(σ, τ) - Lie ideals of
*-rings with derivation
SUN C.X.– Normal families and shared functions 173
TUYEN L.Q., TUYEN O.V.– Some properties of rectifiable spaces181


Fasc. Math. No. 59 (2017)

ACAR ÷., ALTUN I.– A fixed point theorem for ΨF - Geraghty contraction on metric-like spaces5
BADU G.V.R., TOLERA M. D.– Fixed points of generalized (α,ψ,φ)-rational contractive mappings in -complete metric spaces13
DRAGOMIR S.S.– Some results for isotonic functionals via an inequality due to Kittaneh and Manasrah29
KASHURI A., LIKO R.– Hermite-Hadamard type fractional integral inequalities for generalized (r;g,s,m,φ)-preinvex functions43
KHAN M.A., ALI T., KHAN T.U.– Hermite-Hadamard type inequalities with applications57
KIRI™CI M. – Integrated and differentiated spaces of triangular fuzzy numbers75
KONGBAN C., KUMAM P.– Some random coupled best proximity points for a generalized ω-cyclic contraction in polish spaces91
MALAFOSSE B.– Extension of some results on the (SSIE) and the (SSE) of the from F ⊂ ε+F '  and  ε+Fx =F107
SELVAKUMAR A., PARIMALA M., SHANTHAKUMARI S.– On (I,γ)-g * -closed sets via ideal topological spaces125
™ENG‹L U., D‹NDAR S.N.– Contra (μg, λ)-continuous functions133
SET E., MUMCU Î.– Some new fractional Fejťr type inequalities for convex functions145
ZHANG Y., GAO Z., ZHANG H.– Meromorphic solutions of linear difference equations with polynomial coefficients159


Fasc. Math. No. 58 (2017)

ACIKGOZ A., NOIRI T., TAS N.– Contra (mX ,mY )-semicontinuous functions in
ADESANYA A.O., ONSACHI R.O., ODEKUNLE, M.R.– New algorithm for first order stiff initial value problems19
BARRERA W.E., MORALES J.R., ROJAS E.M.– A fixed point theorem for contractive mappings with nonlinear combinations of rational expressions in
b-metric spaces
CALDAS M., JAFARI S.– On semi δs-irresolute functions47
HARINA W.P., RAJESHWARI S.– Non-linear differential polynomials sharing small function with finite weight57
KASHURI A., LIKO R.– Hermite-Hadamard type inequalities for MTm -preinvex functions77
KHAN W.A., GHAYASUDDIN M., SHADAB M.– Multiple-poly-Bernoulli polynomials of the second kind associated with Hermite polynomials97
NARANG T.D., GUPTA S.– Best approximation in metric spaces113
NASHINE H.K., AGARWAL R.P., SHUKLA S., GUPTA A.– Some fixed point theorems for almost (GF, δb )-contractions and application123
POPA V., PATRICU A.M.– A general coincidence and fixed point theorem for hybrid pairs of mappings satisfying a common coincidence range property 145
QAISAR S., HUSSAIN S.– On Hermite-Hadamard type inequalities for functions whose first derivative absolute values are convex and concave155
RASHWAN R.A., HAMMAD H.A.– Stability and strong convergence results for random Jungck-Kirk-Noor iterative scheme 167


Fasc. Math. No. 57 (2016)

ANASTASSIOU G.A.– Fractional self adjoint operator Poincarť and Sobolev type inequalities5
BUDAK H., SARIKAYA M.Z.– On Hermite-Hadamard type inequalities for s-convex mappings via fractional integrals of a function with respect to another function25
DRAGOMIR S.S.– New inequalities of CBS-type for power series of complex numbers37
KAREEM K.A., MOGBADEMU A.A.– On the number of zeros of a polynomial in a region53
KHAN N.U., USMAN T.– A new class of Laguerre-based generalized Apostol polynomials67
KÍ™Í ÷.– On Wijsman I2 -Lacunary statistical convergence for double set sequences91
KO« E., G÷LBA™I ÷.– Semiprime near-rings with multiplicative generalized
(θ, θ)-derivations
OANH B.T.K., THUY N.T.T.– Uniqueness of differential polynomials of meromorphic functions sharing a small function without counting multiplicity121
RAJ K., SHARMA C., PANDOH S.– Multiplication operators on CesŠro-Orlicz sequence spaces137
TERWASE A.P., DARUS M.– On coefficient problems of an operator with respect to symmetric point147
TUYEN L.Q.– A partial answer to a question of Y. Tanaka and Y. Ge157
TUYEN L.Q.– Cauchy symmetric spaces with point-countable cs-networks163


Fasc. Math. No. 56 (2016)

AGARWAL R.P., LUO M-J., RAINA R.K.– On Ostrowski type inequalities5
AKEWE H., MOGBADEMU A.– Common fixed point of Jungck-Kirk-type iterations for non-self operators in normed linear spaces29
DYAVANAL R.S., MATHAI M.M.– Entire and meromorphic solutions of linear difference equations43
GABA Y.U.– Some advances in the theory of quasi-pseudometric type spaces61
GUPTA A.– Ulam-Hyers stability theorem by tripled fixed point theorem77
JAFARI S., NOIRI T.– More on weak s-continuity in topological spaces99
MARZOUKI B., EL HADDOUCHI A.– Generalized altering distances and fixed point for occasionally hybrid mappings111
HOSSEINI MOGHADDAM S.M., MOJDEH D.A., SAMADI B.– Total limited packing in graphs121
POPA V.– A general fixed point theorem for a pair of multi-valued mappings in partial metric spaces129
SZYMA—SKA-D BOWSKA K.– On second order nonlocal boundary value problem at resonance143
THANDAPANI E., SELVARANGAM S., RAMA R., MADHAN M.– Improved oscillation criteria for second order nonlinear delay difference equations with non-positive neutral term155
TIMI™ I.– New stability results of Picard iteration for contractive type mappings167


Fasc. Math. No. 55 (2015)

AKINFENWA O.A., JATOR S.N.– Extended continuous block backward diffe-rentiation formula for stiff systems5
DAS M.– On some I-convergent double sequence spaces of fuzzy real numbers defined by modulus function 19
DEY R., DAS N.R., TRIPATHY B.C.– Ordered vector valued double sequence spaces29
DRAGOMIR S.S.– Inequalities of Jensen type for φ-convex functions 35
EZEAFULUKWE U.A., DARUS M.– A note on q-calculus 53
KOLK E. – On generalized Orlicz sequence spaces defined by double sequences65
KRANZ R., RZEPKA A.– On the approximation of functions from Lp by some special matrix means of Fourier series81
£ENSKI W., SZAL B.– On pointwise approximation of functions by some matrix means of conjugate Fourier series91
DE MALAFOSSE B.– Solvability of sequence spaces equations of the from
( Ea )Δ+Fx=Fb
MALVIYA N.– The N-fuzzy metric spaces and mappings with application133
PATHAN M.A., KHAN W.A.– Some new classes of generalized Hermite-Based Apostol-Euler and Apostol-Genocchi polynomials153
RAJESH N., SUDHA P.– Properties of ω-continuous functions171
RASOULI S.H., SALEHI B.– On the existence of nontrivial solutions for nonlocal elliptic Kirchhoff type problems with nonlinear boundary conditions183
TUN« C.– Instability in multi delay functional differential equations of fourth order189
TUYEN L.Q.– Mapping theorems on spaces with sn-network g-functions199


Fasc. Math. No. 54 (2015)

BELAÎDI B.– Growth of meromorphic solutions of finite logarithmic order of linear difference equations 5
BORZOOEI R.A., SAEID A.B., REZAEI A., RADFAR A., AMERI R.– Distributive pseudo BE-algebras21
CHAURASIA P.K.– Operator valued measures as multipliers of L1 (I, X) with order convolution41
DATTA S.K., BISWAS T., BHATTACHARYYA S.– Growth estimates of composite entire functions in the light of slowly changing functions based relative order, relative type and relative weak type59
DHANKE M.B., BORA P.S.– On nonlinear second order Volterra-Fredholm functional integrodifferential equation with nonlocal condition in Banach spaces75
GUPTA V., SINGH B., KUMAR S.– Fixed point theorems for Kannan type mappings in 2-menger spaces97
HUSSAIN S.– Some more properties of γ-s-closed spaces 117
MOHANTA S.K.– Some fixed point theorems using wt-distance in b-metric spaces125
I - open sets


Fasc. Math. No. 53 (2014)

AL-OMERI W., AL-OMARI A., MD NOORANI M.S.– α-local functions and its properties in ideal topological spaces5
BANERJEE A., MAJUMDER S., MUKHERJEE S.– A uniqueness result on meromorphic functions sharing two sets II 17
BUNYAWAT A., SUANTAI S.– Strong convergence theorems of one-step iterative scheme for a countable family of multivalued mappings in a Banach space31
ELABBASY E.M., ELEISSAWY S.M.– Global behavior of higher order a rational difference equation39
HATIR E., AL-OMARI A., JAFARI S.– δ-local function and its properties in ideal topological spaces53
JAIN R.S., DHAKNE M.B.– On mild solutions of nonlocal second order semilinear functional integro-differential equations65
LISKOWSKI M.– Density of smooth functions in Sobolev spaces "wth mixed functions"77
MATKOWSKI J.– A counterpart of the Taylor theorem and means85
MISHRA V.N., KHATRI K., MISHRA L.N.– Strong CesŠro summability of triple Fourier integrals95
OKEKE G.A.– Approximation of fixed points of some classes of nonlinear mappings113
RASHWAN R.A., ALBAQERI D.M.– Approximating common random fixed point for two finite families of asymptotically nonexpansive random mappings129
SANTHI P., POOVAZHAKI R., RAVI O.– Contra quotient functions on generalized topological spaces149
TUYEN L.Q.– Remarks on sequence-convering closed maps 161


Fasc. Math. No. 52 (2014)

ALJARRAH H.H., MD NOORANI M.S., NOIRI T.– Slightly -(μ, λ) continuous functions5
AL-OMARI A., NOIRI T. – w-sets and ∨w-sets in weak structures space due to CsŠszŠr15
BISWAS A.– On relative order of entire functions of several complex variables25
DUNG N.V.– A general fixed point theorem on G-metric spaces35
HAZARIKA B.– Some classes of ideal convergent difference sequence spaces of fuzzy numbers defined by Orlicz function 45
KHEDR F.H. – Properties of ij-delta open sets65
NADIR M., GAGUI B.– Numerical solution of Hammerstein integral equations in Lp spaces83
OKEKE G.A., OLALERU J.O. – Common fixed points of a three-step iteration with errors of asymptotically quasi-nonexpansive nonself-mappings in the inter-mediate sense in Banach spaces 93
OLGUN A., TA™DELEN F. – On the rates of convergence of certain bivariate linear positive operators117
RAJESH N., VIJAYABHARATHI V.– On almost (γ', γ) - (β', β) -s-continuous functions131
SEZER A.S., ATAG‹N A.O., «AGMAN N. – N-group SI-action and its applications to N-group theory139
TRIPATHY A.K., PANIGRAHI S., BASU R. – Oscillatory and asymptotic behaviour of fourth order nonlinear neutral delay differential equations with positive and negative coefficients155


Fasc. Math. No. 51 (2013)

ABBAS S., BENCHOHRA M.– Uniqueness results for Fredholm type fractional order Riemann-Liouville integral equations 5
ARACI S., ACIKGOZ M., QI F., JOLANY H.– A note on the modified q-Genocchi numbers and polynomials with weight (α, β)21
ATAPOUR M., SHEIKHOLESLAMI S.M., VOLKMANN L.– Signed star {k}-domatic number of a graph33
BOSEDE A.O.– Stability theorem involving comparison functions and E-distance in Hausdorff uniform spaces 45
BOUHADJERA H., POPA V. – Some common fixed point theorems for occasionally weakly compatible mappings satisfying implicit relation and contractive modulus53
CHANDOK S., NARANG T.D.– Invariant points of best approximation and best simultaneous approximation61
EHIGIE J.O., OKUNUGA S.A., SOFOLUWE A.B.– A class of exponentially fitted second derivative extended backward differentiation formula for solving stiff problems71
HAZARIKA B.– On acceleration convergence of multiple sequences85
HUSSAIN S., AHMAD B.– On locally γ-s-closed spaces 93
LIU K., LI P., ZHONG W.– On a system of rational difference equations 105
ÖG‹NMEZ H., ÖCALAN Ö.– Oscillation for difference equations with several positive and negative coefficients115
SEZER A.S., ATAG‹N A.O., «AGMAN N. – A new view to N-group theory: soft N-groups123
SHARMA P., CHANDEL R.S.– Fixed point theorems for weakly compatible mappings in fuzzy metric spaces 141
SINGH J., BISHT R.K., JOSHI M.C.– Conditional reciprocal continuity and common fixed points149
SUBRAMANIAN N.– Some generalized spaces of vector valued double sequences defined by a modulus 159


Fasc. Math. No. 50 (2013)

AL-HAWARY T.A. – Fuzzy C-flats 5
AZIZ W., GUERRERO J.A., MERENTES N. – On Nemytskii operator in the space of set-valued functions of bounded p-variation in the sense of Riesz with respect to the weight function 17
ELABBASY E.M., ELEISSAWY S.M. – Qualitative properties for a higher order rational difference equation33
EL-ATIK A.A., NASEF A.A. – On almost co-F-closed topologies and their applications51
ERDOGAN M.E., CINAR C. – On the dynamics of the recursive sequence 59
HUSSAIN S., ROSAS E. – Properties of  γ-semi-regular-open sets and  γ-s-closed spaces67
KARCZMAREK P., PYLAK D., W”JCIK P. – Singular integral equations with multiplicative Cauchy-type kernels77
NASEF A.A., EL-MAGHRABI A.I. – Weak and strong forms of  γ-irresoluteness 91
NOIRI T., BHUVANESWARI J., RAJESH N. – On totally  πg-continuous functions101
NOIRI T., POPA V. – On iterate minimal structures and M-iterate continuous functions109
XIE T., LI H. – On e-continuous functions and related results121
ZAYED E.M.E., EL-MONEAM M.A. – On the qualitative study of the nonlinear difference equation 137


Fasc. Math. No. 49 (2012)

ALIMOHAMMADY M., SADEGHI A. – On the asymptotic behaviour of pexiderized additive mapping on semigroups 5
AYDI H. – Common fixed points for four maps in ordered partial metric spaces15
BISHT R.K. – Common fixed points of conditionally commuting mappings satisfying weaker continuity conditions33
JHADE P.K., SALUJA A.S. – On the convergence of an iterative method for asymptotically nonexpansive mappings in intermediate sense43
KHAN H.H., ALI R. – Growth and approximation errors of entire series having index-pair (p,q)61
NADIR M. – Adapted quadratic approximation for logarithmic kernel integrals 75
NURAY F., RHOADES B.E. – Statistical convergence of sequences of sets 87
POPA V., PATRICIU A.-M. – Altering distances, fixed point for occasionally hybrid mappings and applications 101
RAJ K., SHARMA S.K. – Sequence spaces defined by a sequence of modulus function in n-normed spaces 113
RAVI O., RODRIGO J.A.R., THARMAR S., VIJAYALAKSHMI K. – Between closed sets and *g - closed sets127
SARMA B. – Statistically convergent difference double sequence spaces defined by Orlicz function 137
SUNDARAM P., SHEIK JOHN M., RAVI O., LATHA R. – On g-regular and g-normal spaces145


Fasc. Math. No. 48 (2012)

AKINBO G. – Common fixed points for weakly compatible mappings satisfying
A-contractive conditions of integral type
CARPINTERO C., RAJESH N., ROSAS E. – Operation-b-open sets in topological spaces 13
EL-MAGHRABI A.I., AL-SUBHI B., JAFARI S. – On strongly generalized
pre-continuous mappings
GUPTA V., ARAL A., OZHAVZALI M. – Approximation by q-SzŠsz-Mirakyan-Baskakov operators35
IONASCU E.J. – Regular octahedra in {0, 1, K, n} 349
KUMAR D., BISHNOI P. – On the refined measures of growth of generalized biaxially symmetric potentials having index - q 61
LISKOWSKI M. – Sobolev spaces "with mixed functions" 73
MURTHY P.P., TAS K., CHOUDHARY B.S. – Weak contraction mappings in Saks spaces83
RAJESH N. – On weakly g~-continuous functions 97
SEDGHI S., ALTUN I., SHOBE N. – Some properties of T-metric spaces and a common fixed point theorem105
TA™DELEN F., BA™CANBAZ-TUNCA G., EREN«IN A. – On a new type Bernstein-Stancu operators119
TRIPATHY A.K., RAO K.V.V.S. – Oscillation properties of a class of nonlinear differential equations of neutral type 129
WITU£A R., HETMANIOK E., S£OTA D. – Mean-value theorems for one-sided differentiable functions145


Fasc. Math. No. 47 (2011)

IWI—SKA M., POPOWSKA B. – Characterizations of the exponential distribution by geometric compound5
MANRO S., KUMAR S., BHATIA S.S.– R-weakly commuting maps in G-metric spaces11
MATKOWSKI J. – Mean-value type equalities with interchanged function and derivative19
NOIRI T., POPA V. – Further properties of quasi M-continuous functions29
OLALERU J.O., AKEWE H. – The equivalence of Jungck-type iterations for generalized contractive-like operators in a Banach space47
RAJ K., SHARMA S.K. – Weighted substitution operators between L p -spaces of vector-valued functions63
RAJESH N, EKICI E., JAFARI S. – On new separation axioms in bitopological spaces71
RAVI O., MISSIER S.P., PARKUNAN T.S. – Decomposition of bitopological (1,2)* -homeomorphisms 81
SAMET B., VETRO C. – Comments on the paper "Coincidence theorems for some multivalued mappings" by B. E. Rhoades, S. L. Singh and Chitra Kulshrestha89
SHARMA S., TILWANKAR P. – Common fixed point theorems in intuitionistic fuzzy metric space using general contractive condition of integral type95
SULAIMAN W.T. – A note on summability factors of infinite series117
VATS R.K., KUMAR S., SIHAG V. – Fixed point theorems in complete G-metric space127


Fasc. Math. No. 46 (2011)

AKKOUCHI M., POPA V. – Well-posedness of fixed point problem for a hybrid pair of mappings5
ALI Z.S.– A short note on a multiplier of the NŲrlund means and convex maps of the unit disc17
CARPINTERO C., RAJESH N., ROSAS E. – On a class of (γ , γ')-preopen sets in a topological space25
DESHPANDE B., CHOUHAN S. – Common fixed point theorems for hybrid pairs of mappings with some weaker conditions in 2-metric spaces37
DUTTA A.J. – Lacunary p-absolutely summable sequences of fuzzy real numbers 57
HUSSAIN S. – Applications of minimal γ-semi-open sets 65
JAFARI S., NOIRI T., POPA V., RAJESH N. – On upper and lower faintly δ-β-continuous multifunctions77
PADHI S., QIAN C. – On asymptotic property of solutions of higher order functional differential equations87
RAJESH N., CALDAS M., JAFARI S., MOSHOKOA S.P. – Quasi δ-β-continuous functions105
RAVI O., THIVAGAR M.L., LATHA R. – (g,s)-continuous functions between topological spaces115
SUBRAMANIAN N., MISRA U.K. – The NŲrlund Orlicz space of double gai sequences 131
SUN T., XI H., PENG X. – A note on ω-limit set of a tree map 141


Fasc. Math. No. 45 (2010)

AKKOUCHI A.– Well-posedness of the fixed point problem for Φ-max-contractions5
B‹Y‹KYAZICI Í.– A Korovkin type approximation theorem and its application 13
ELSAYED E.M. – On the solutions of a rational system of difference equations 25
KARATAS R.– On the solutions of the recursive sequence ( -a+xn-k xn-(2k+1))37
KHEDR F.H., ABDELHAKIEM K.M. – Operations on bitopological spaces 47
KUMAR S.– A note on Jungck's fixed point theorem 59
NOIRI T., POPA V. – A generalization of ω-continuity 71
OLALERU J.O., AKEWE H.– The convergence of Jungck-type iterative schemes for generalized contractive-like operators N87
PACHPATTE B.G.– Approximate solutions of a certain second order integro- differential equation 99
SUBRAMANIAN N., MISRA U.K.– The semi normed space defined by a double gai sequence of modulus function111
TIDKE H.L., DHAKNE M.B. – Existence and uniqueness of solution of differential equation of second order in cone metric spaces 121
TRIPATHY A.K. – Oscillation properties of a class of neutral differential equations with positive and negative coefficients 133


Fasc. Math. No. 44 (2010)
Dedicated to Professor Gerasimos Ladas


CAMOUZIS E., DRYMONIS E., LADAS G.– Patterns of boundedness of the rational system and 9
»ERMŃK J.– On a linear difference equation with several infinite lags 19
FERREIRA M., OLIVEIRA B.M.P.M., PINTO A.A.– Piecewise R&D dynamics on costs 29
GUY R.T., MISIUREWICZ M. – Euler approximations can destroy unbounded solutions 43
GY’RI I., REYNOLDS D.W.– On asymptotically periodic solutions of linear discrete Volterra equations53
H÷GNńS G., JUNG B. –Analysis of a stochastic difference equation: exit times and invariant distributions69
MALINOWSKA A.B., TORRES D.F.M. – The delta-nabla calculus of variations 75
MIGDA M. –Oscillation criteria for higher order neutral difference equations with oscillating coefficient 85
NOWAKOWSKA W., WERBOWSKI J. –On connections between oscillatory solutions of functional, difference and differential equations 95
SCHMEIDEL E.– Boundedness of solutions of nonlinear three-dimensional difference systems with delays107
SIZER W.S.– Further instances of periodicity in May's host parasitoid equation 115


Fasc. Math. No. 43 (2010)

ACOSTA A., AZIZ W., MATKOWSKI J., MERENTES N.– Uniformly continuous composition operator in the space of  φ -variation functions in the sense of Riesz 5
ATASEVER N., YALCINKAYA I.– On a class of rational difference equations 13
BA™ARIR M. – On Lacunary strong σ-convergence with respect to a sequence of
DESHPANDE B.– Common fixed point results for six maps on cone metric spaces with some weaker conditions 33
GURAN L. – Existence and data dependence of fixed points for multivalued weakly φ-contractive operators 45
KHAN M.S., SAMANIPOUR M., MURTHY P.P. – Common fixed point theorems for compatible maps of type (P) and kind of weakly commuting maps53
KORO—SKI J. – The radial solution of the heat equation in the cylindrical ring 69
KUMAR D. – On the fast growth of analytic functions by means of Lagrange polynomial approximation and interpolation in CN85
OLATINWO M.O. – Some stability results for nonexpansive and quasi-nonexpansive operators in uniformly convex Banach space using two new iterative processes of Kirk-type 101
PACHPATTE B.G. – Integral equation arising in the theory of partial differential equations115
P√CURAR M. – A fixed point result for φ-contractions on b-metric spaces without the boundedness assumption127
SEN M. – On I-limit superior and I-limit inferior of sequences of fuzzy numbers139
SUBRAMANIAN N., ESI A. – The NŲrlund space of double entire sequences147
SUBRAMANIAN N., MISRA U.K. – The generalized double difference of gai sequence spaces155
YALCINKAYA «., KURBANLI A.S. – On the solutions of the difference equation xn+1 =max{1 / xn , xn-1 / xn}165
YALCINKAYA Í., «INAR C. – Global asymptotic stability of a system of two nonlinear difference equations171


Fasc. Math. No. 42 (2009)

ALTUN I., TURKOGLU D.– Some fixed point theorems for mappings satisfying contractive condition of integral type on d-complete topological spaces 5
BAKER C.W., CALDAS M., JAFARI S., MOSHOKOA S.P.– More on almost contra λ -continuous functions 17
BOSEDE A.O. – Noor iterations associated with Zamfirescu mappings in uniformly convex Banach spaces29
GRACE S.R., AGARWAL R.P., AKTAS M.F.– Oscillation criteria for third order nonlinear difference equations 39
JAFARI S., THIVAGAR M.L., PONMANI S.A., RAJESWARI R.R. – A bitopological view of γ-open sets 53
PACHPATTE B.G. – Growth estimates on mixed Volterra-Fredholm type integral inequalities 63
PANT V., JHA K. – (ε, δ) contractive condition and common fixed points 73
PARSAI R., RATHORE M.S., CHANDEL R.S. – On a common fixed point of two random operators using random Mann iteration scheme 85
POP O.T. – Voronovskaja-type theorems and approximation theorems for a class of GBS operators 91
RATH R.N., RATH S.K. – Oscillation and nonoscillation criteria for a neutral delay difference equation of first order109
TRIPATHY B.C., DUTTA H. – Some difference paranormed sequence spaces defined by Orlicz functions 121
YAL«INKAYA Í. – On the difference equation xn+1 =α+(xn-2 /xnk ) 133
YAL«INKAYA Í., «INAR C. – On the dynamics of the difference equation
x n+1 =(axn-k /(b+cxnk ))


Fasc. Math. No. 41 (2009)

ALIOUCHE A., POPA V.– Coincidence and common fixed point theorems via
R-weak commutativity of type AT
BA™ARIR M., ALTUNDAĞ S.– Some generalized difference sequence spaces defined by a sequence of Orlicz functions 17
BA™CANBAZ-TUNCA G., TUNCER Y.– Some properties of multivariate beta operator31
CERNEA A.– Lipschitz-continuity of the solution map of some nonconvex second-order differential inclusions 45
ELABBASY E.M., ELSAYED E.M.– On the solution of the recursive sequence
xn+1 =max{ xn-2 , 1/xn-2 }
EREN«IN A., TA™DELEN F.– On certain Kantorovich type operators 65
JAFARI S., VISWANATHAN K., RAJAMANI M.– A decomposition of α-continuity and αgs-continuity 73
LOMTATIDZE A., OPLU©TIL Z., ©REMR J.– Solvability conditions for a nonlocal boundary value problem for linear functional differential equations 81
NOIRI T., AL-OMARI A., NOORANI M.S.M. – Slightly ω-continuous functions97
NOIRI T., POPA V.– Minimal structures, m-open multifunctions in the sense of Kuratowski and bitopological spaces107
PACHPATTE B.G.– On some fundamental aspects of certain sum-difference equations119
TRIPATHY B.C., SARMA B.– On some classes of difference double sequence spaces 135


Fasc. Math. No. 40 (2008)

ELSAYED E.M.– On the solution of recursive sequence of order two 5
ESI A., TRIPATHY B.C.– On some generalized new type difference sequence spaces defined by a modulus function in a seminormed space 15
JAIYEOLA T.G.– Some necessary and sufficient conditions for parastrophic invariance of the associative law in quasigroups 25
OLATINWO M.O.– A generalization of some convergence results using a Jungck-Noor three-step iteration process in arbitrary Banach space 37
OLATINWO M.O., IMORU C.O.– A generalization of some results on multi-valued weakly Picard mappings in b-metric space 45
PACHPATTE B.G. – On neutral type hyperbolic integrodifferential equation 57
PANT V., PADALIYA S., PANT R.P.– Common fixed points of mappings not satisfying contractive condition 71
SRIVASTAVA G.S. – Generalized growth of entire harmonic functions 79
SUBRAMANIAN N., TRIPATHY B.C., MURUGESAN C.,– The double sequence space Γ291
TRIPATHY B.C., DAS P.C.,– Some classes of difference sequences of fuzzy real numbers 105
TRIPATHY B.C., SARMA B.,– Generalized KŲthe-Toeplitz dual of some double sequence spaces 119


Fasc. Math. No. 39 (2008)

ABBAS M. – Common fixed point results with applications in convex metric space 5
BRANDYS J. – Strong maximum principles for infinite systems of parabolic differential-functional inequalities with nonstandard initial inequalities, 17
LIU Y. – Anti-periodic boundary value problems for nonlinear impulsive functional differential equations 27
PACHPATTE B.G. – On iterated Volterra integrodifferential equation of higher order 47
POPA V. – A common fixed point theorem for two multifunctions defined on closed ball63
SHARMA S., DESHPANDE B., PATHAK R. – Common fixed point theorems for hybrid pairs of mappings with some weaker conditions 71
TRIPATHY B.C., BORGOHAIN S. – The sequence space 87
TRIPATHY B.C., DAS P.C. – Statistically convergent difference sequence spaces of fuzzy real numbers 97
TRIPATHY B.C., SARMA B. – Some paranormed difference double sequence spaces defined by Orlicz function 113
TRIPATHY B.C., SEN M. – Vector valued paranormed spaces associated with multiplier sequences125


Fasc. Math. No. 38 (2007)

BUJAKEWICZ-KORO—SKA R., KORO—SKI J. – Linear and nonlinear boundary value problems for polyharmonic equations 5
GE Y. – Notes on spaces with a weak-development 17
KARSLI H., IBKLI E. – On convergence of convolution type singular integral operators depending on two parameters 25
KORO—SKI J. – Nonhomogeneous parabolic problem in the space R41
KUMAR D. – On approximation and interpolation errors of analytic functions 47
LIU Y. – Periodic solutions of first-order functional differential equations with supper-linear nonlinearities 57
NOIRI T., POPA V. – Separation axioms in quasi m-bitopological spaces 75
OLATINWO M.O. – Some existence and uniqueness common fixed point theorems for selfmappings in uniform space 87
PACHPATTE B.G. – New inequalities of Ostrowski-Grûss type 97
PADHI S. – Oscillation and asymptotic behaviour of solutions of second order neutral differential equations with positive and negative coefficients 105
P£UCIENNIK P. – A modified Corrado-Miller implied volatility estimator 115
YANG S . – A note on sequence-covering images of metric spaces 125


Fasc. Math. No. 37 (2007)

BYSZEWSKI L. – A system of implicit impulsive nonlinear parabolic functional-differential inequalities 5
KUBIACZYK L, DESHPANDE B. – Common fixed point of multivalued mappings without continuity 19
MlCHA£OWICZ A. – On the strong approximation offunctions by the Bernstein polynomials 27
PACHPATTE B.G. – On higher order Yolterra-Fredholm integrodifferential equation 35
PADHI S. – Asymptotic behaviour of oscillatory solutions of n-th order differential equations 49
RATH R., PADHY L.N., MISRA N. – Oscillation and non-oscillation of neutral difference eĪuations of flrst order with positive and negative coefficients 57
SHARMA S., BAGWAN A. – Common flxed point theorem for six mappings in Menger space 67
ŠMARDAZ. – On singular initial value problem for nonlinear Fredholm integrodifferential equations 79
ŠREMR J. – On the initial value problem for two-dimensional systems of linear functional differential equations with monotone operators 87
THANDAPANI E., SELYARAJ B. – Oscillations of fourth order Īuasilinear difference equations 109
ZHU H., HUANG L. – Convergence and periodic properties of solutions for a class ofdelay difference equation 121


Fasc. Math. No. 36 (2005)

AFUWAPE A.U., ADESINA O.A. – On the bounds for mean-values of solutions to certain third-order non-linear differential equations 5
ALTIN Y., TRIPATHY B.CH., IŞIK M., ET M. – Strongly (Vσ,Θ,q)–summable sequences defined by Orlicz functions 15
GE Y. – On closed inverse images of mesocompact spaces 27
IWIŃSKA M. – On the characterization of the exponential distribution by record values with a random index 33
JANIAK T., ŁUCZAK-KUMOREK E. – Stability of generalized functional-differential equations 41
JANKOWSKI L., MARLEWSKI A. – A note on the core topology and three other ones 49
KALINOWSKI J., KLAMKA J. – Positive dynamical systems with delays65
LISKOWSKI M. – Approximation by functions in C0(Ω) in Orlicz – Sobolev spaces 73
POSKROBKO A. – On self-adjointness problem for Jacobi operators83
SHARMA S., DESHPANDE B. – Discontinuity and weak compatibility in fixed point consideration of Gregus type in convex metric spaces 91
SKÓRA L. – Remarks on first order impulsive ordinary differential equations with anti-periodic boundary conditions103
WEI G., SHEN J. – Asymptotic behaviour of solutions of implusive differential equations with positive and negative coefficients109


Fasc. Math. No. 35 (2005)

AGARWAL R.P., GRACE S.R., O’REGAN D. – On the oscillation of certain advanced functional differential equations using comparison methodsy 5
ARAL A. – On a generalized λ-Gauss Weierstrass singular integral 21
BOHNER M., HILSCHER M. – An eigenvalue problem for linear Hamiltonian dynamic systems33
KUMAR D. – Approximation of growth numbers of generalized bi-axially symmetric49
LIU Y., GE W. – Global attractivity in a non-autonomous logistic type model with unbounded delay59
MIGDA M. – On the discrete version of generalized Kiguradze’s lemma75
PACHPATTE B.G. – Explicit bounds on some retarded integral inequalities81
RATH R.N., PADHY L.N. – Necessary and sufficient conditions for oscillation of solutions of a first order forced nonlinear difference equation with several delays 95
REMPULSKA L., SKORUPKA M. – On strong approximation of functions of one and two variables by certain operators107
SHAKER M., ABDUL-HUSSEIN, SRIVASTAVA G.S. – A study of bornological properties of the space of entire functions represented by multiple Dirichlet series115
WASZAK A. – Some remarks on strong convergence in modular spaces of sequences143
ZHANG G., CHENG S.S. – On two second order half-linear difference equations155


Fasc. Math. No. 34

Brandys J. – Uniqueness criterion of a classical solution of a biparabolic problem in an unbounded domain with a curvilinear boundary5
Gupta V., Abel U. – The rate of convergence by a new type of Meyer-Konig and Zeller operators15
Jiang D., Xu. X., O'Regan D., Agarwal R.P. – Multiple positive solutions to semipositone Dirichlet boundary value problems with singular dependent nonlinearities25
Kubiaczyk I., Saker S.H. – Oscillation and asymptotic behavior of second-order nonlinear difference equations39
Kumar D., Kasana H.S. – Approximation of entire harmonic functions R3 in Lbeta - norm55
Pachpatte B.G. – On some basic finite difference inequalities65
Padhi S., Kar P.K., Nayak S.K. – Necessary and sufficient conditions for the solutions of second order neutral differential equations to be oscillatory or tending to zero73
Stevic S. – Sequences which satisfy a logarithmic linear inequality85
Tal-Figiel B. – Green function and some inhomogenous problem for the equation P2u(x,t)=f(x,t)97
Tal-Figiel B. – Some nonlinear diffusion equation with three nonlinearities105
Tomczak K. – Some remarks of Borel the means of trigonometric Fourier series121
Walczak Z. – Approximation properties of certain modified Szasz-Mirakyan operators of functions of two variebles129
Walczak Z. – Certain modification of Szasz-Mirakyan operators141
Waszak A. – A contribution to the theory of modular spaces of sequences149
Liu Yuji., Ge Weigao – Existence and nonexistence of positive solutions for nonlinear three-point boundary-value problems157


Fasc. Math. No. 33

Adamczak M. – Some remarks on almost periodic functions5
Baranski F., Tal-Figiel B. – Some nonlinear problem to the equation delta u - c u = f for a sphere21
Benchohra M., Ntouyas S.K. – On an hyperbolic functional differential inclusion in Banach spaces27
Lin X., Shen J. – Bounded oscillation for a class of even order neutral difference equations37
Pachpatte B.G. – Inequalities useful in the theory of certain partial differential equations49
Rempulska L., Skorupka M. – Approximation of functions of one and two variables by some operators57
StoiŮski S. – An application of modular spaces to approximation problems, IX89


Fasc. Math. No. 32

Baranski F., Zdankiewicz Z. – Green functions and periodic solution to the m-parabolic equation with boundary-value conditions of Riquier type5
Byszewski L., Hachaj J. – On a parabolic problem together with a semilinear equation and a semilinear initial condition15
Došlý O., Pospíšial Z. – Hyperbolic transformation and hyperbolic difference systems25
Iwinska M. – Properties of record values with random index characterizing exponential distribution49
Koronski J. – On the homogeneous quasi polyharmonic polynomials55
Kulenovic M.R.S., Hadžiomerspahic S. – Existence of nonoscillatory solution for linear neutral delay equation61
Kumar D. – Proximate type in reference to generalized biaxisymmetric potentials73
Parhi N., Tripathy A.K. – On asymptotic behaviour and oscillation of forced first order nonlinear neutral difference equations83
Stanimirovic P.S – Computation of matrix splittings and their applications97
Waszak A. – On properties of some modular spaces of double sequences105


Fasc. Math. No. 31

Benchohra M., Sntouyas S.K. – Controllability of nonlinear integrodifferential inclusions in Banach spaces with nonlocal conditions5
Graef J.R., Thandapani E. – Oscillatory and asymptotic behavior of fourth order nonlinear delay difference equations23
Gupta P., Gupta V. – Rate of convergence on Baskakov-Szasz type operators37
Janík V., Marušiak Pavol – Existence of nonoscillatory solutions of the third order quasilinear neutral differential equations45
Migda M. – Asymptotic behaviour of solutions of nonlinear delay difference equations57
Migda M., Schmeidel E. – On the asymptotic behavior of solutions of nonlinear difference equations63
Rehák P. – Oscillation and nonoscillation criteria for second order linear difference equations71
Špániková E. – Oscillatory properties of solutions of neutral differential systems91
Stoinski St. – Some remarks on spaces of almost periodic functions105
Walczak Zb. – Approximation of functions of two variables by modified Szasz-Mirakyan operators117


Fasc. Math. No. 30

Bogalska K. - The Voronovskaya type theorem for the Basakov-Kantorovich operators5
Cheng S.S., Liu S. T., Zhang G. - A multivariate oscilation theorem15
Gurdek M., Kurczynska J., Walczak Z. - Approximation theorems for some operators in weighted spaces of functions of two variables23
Machaj J. - An application of the Green method to a determination of unique solutions of iterated parabolic-elliptic problems37
Herzog M. - Some remarks about a generalized method of summability of series57
Koronski J. - On the periodic solution of the parabolic problem for the cylinder63
Koronski J. - The periodic solution to biparabolic equiation for the three - dimensional temporal - spatial cylinder with boundary conditions of riquier type71
Koronski J. - The radial solution of the factorised polyparabolic equiation in spherical shall81
Liskowski M. - Interpolation inequalities in Orlicz-Sobolev space99
Pachpatte B.G. - A note on multivariate variants of Hardy's inequality107
Pachpatte B.G. - Integral inequalities of Wirtinger and Opial type in three independent variables113
Pieniazek A. - A limit problem for a factorised parabolic equiation of the fourth order131
Popenda J., Radicheva E. - Growth estimates for solutions of difference equiations147
Stankiewicz J. - Smoothing conditions and their applications159
Stoinski S. - On compactness of almost periodic functions in the Lebesque measure171


Institute of Mathematics

Marian Dondajewski

PoznaŮ University of Technology