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117

An invariance of the geometric mean with respect to Stolarsky mean-type mapping

D. Głazowska, W. Jarczyk, J. Matkowski
2003
98

A characterization of Lp-norm with the aid of equality condition in the Hölder inequality

J. Rätz, J. Matkowski
1999
167

A composite functional equation and invariant curves

J. Okrzesik, J. Matkowski
2010
152

A converse of the Hölder inequality theorem

J. Matkowski
2009
16

A fixed point theorem for non-expansive mappings on compact metric spaces

K. Baron, J. Matkowski
1973
175

A functional equation characterizing homographic functions

J. Matkowski
2010
179

A functional equation related to equality of means problem

J. Matkowski
2011
146

A functional equation with two unknown functions

P. Volkmann, J. Matkowski
2008
42

A functional inequality characterizing convex functions, conjugacy and a generalization of Hölder's and Minkowski's inequalities

J. Matkowski
1990
44

A generalization of Hölder's and Minkowski's inequality and conjugate functions

J. Matkowski
1991
170

A generalization of the Gołąb-Schinzel functional equation

J. Matkowski
2010
78

A generalized α-Wright convexity and related functional equation

M. Wróbel, J. Matkowski
1996
176

A mean-value theorem and its applications

J. Matkowski
2011
125

A modifieed Gołąb-Schinzel functional equation (with ab-applications to meteorology and fluid mechanics)

P. Kahlig, J. Matkowski
2003
145

A pair of linear functional in-equalities characterizing polynomials

D. Krassowska, T. Małolepszy, J. Matkowski
2008
132

A pair of linear functional inequalities and a characterization of Lp-norm

D. Krassowska, J. Matkowski
2005
124

A pair of linear functional inequalities of iterative type related to a Cauchy functional equation

D. Krassowska, J. Matkowski
2003
63

A sandwich with convexity

K. Baron, K. Nikodem, J. Matkowski
1994
94

A separation theorem for Mφ-convex functions

Z. Zgraja, J. Matkowski
1998
143

A simultaneous system of functional inequalities and mappings which are weakly of a constant sign

D. Krassowska, J. Matkowski
2007
119

Affine and convex functions with respect to the logarithmic mean

J. Matkowski
2003
66

An integral Jensen inequality for convex multifunctions

K. Nikodem, J. Matkowski
1994
140

An invariance of the geometric mean with respect to Lagrangean means

D. Głazowska, J. Matkowski
2007
20

Analytic solutions of a system of functional equations

K. Baron, R. Ger, J. Matkowski
1975
121

Another characterization of the Gamma function

D. Gronau, J. Matkowski
2003
116

Arithmetic mean as a linear combinationtion of two quasi-arithmetic means

D. Głazowska, W. Jarczyk, J. Matkowski
2002
82

Banach type fixed point theorem on product of spaces

S.L. Singh, J. Matkowski
1997
36

BV -solutions of nonlinear functional equations

C. Dyjak, J. Matkowski
1987
31

Cauchy functional equation on restricted domain and commuting functions

J. Matkowski
1985
93

Characteristic analysis for a polynomial-like iterative equation

W. Zhang, J. Matkowski
1998
56

Characterization of globally Lipschitzian composition operator in the Sobolev space Wpn [a,b]

N. Merentes, J. Matkowski
1993
50

Characterization of globally Lipschitzian composition operators in the Banach space BVp2

N. Merentes, J. Matkowski
1992
118

Cocycles of continuous iteration semi-groups

G. Guzik, W. Jarczyk, J. Matkowski
2003
95

Continuous solutions of a functional equation

J. Matkowski
1998
189

Controllability of the Semilinear Volterra-Stieltjes Integral Equations in the Space of Regulated Function

L. A. Azocar, H. Leiva, N. Merentes, J. Matkowski
2012
148

Converse theorem for the Minkowski inequality

J. Matkowski
2008
129

Convex functions with respect to a mean and a characterization a quasi-arithmetic mean

J. Matkowski
2004
86

Convex functions with respect to an arbitrary mean

J. Rätz, J. Matkowski
1997
96

Convex set-valued functions and their conjugate

K. Nikodem, J. Matkowski
1998
68

Convex-like inequality, homogeneity, subadditivity and characterization of Lp-norm

M. Pycia, J. Matkowski
1995
85

Convexity of power functions with respect to symmetric homogeneous means

J. Rätz, J. Matkowski
1997
204

Convexity Property and a new Characterization of Euler’'s Gamma Function

H. Alzer, J. Matkowski
2013
97

Decomposition of homogeneous means and construction of some metric spaces

P. Kahlig, J. Matkowski
1998
105

Dido's functional equation revisited

P. Kahlig, A.N. Sharkovsky, J. Matkowski
2000
134

Distributions of homogeneous means of uniform independent random variables and a characterization of means

P. Kahlig, J. Matkowski
2005
131

Elliptic means and their generalizations

P. Kahlig, J. Matkowski
2004
158

Embeddability of mean-type mappings in a continuous iteration semigroup

W. Jarczyk, J. Matkowski
2010
90

Envelopes of families of curves related to some iterative functional equations

P. Kahlig, J. Matkowski
1997
80

Envelopes of special class of one-parameter families of curves

P. Kahlig, J. Matkowski
1996
83

Equality in Minkowski inequality and a characterization of Lp-norm

J. Rätz, J. Matkowski
1997
33

Examples and remarks to a fixed point theorem

J. Miś, J. Matkowski
1986
156

Extension of solutions of a functional equation in two variables

J. Matkowski
2009
202

Fixed point theorem in a uniformly convex paranormed space and its application

J. Matkowski
2013
25

Fixed point theorems for contractive mappings in metric space

J. Matkowski
1980
22

Fixed point theorems for mappings with a contractive iterate at a point

J. Matkowski
1977
198

Fixed points and iterations of mean-type mappings

J. Matkowski
2012
29

Form of Lipschitz operators of substitution in Banach space of differentiable functions

J. Matkowski
1984
28

Functional equation and Nemytskii operators

J. Matkowski
1982
76

Functional equations involving logarithmic mean

P. Kahlig, J. Matkowski
1996
184

Functional equations related to homographic functions

J. Matkowski
2011
47

Functional inequality characterizing concave functions in (0;∞)k

J. Matkowski
1992
57

Functions which are additive on their graphs and some generalizations

J. Matkowski
1993
109

Funkcyjne równania

J. Matkowski
2002
168

Generalizations of Lagrange and Cauchy Mean-Value Theorems

J. Matkowski
2010
149

Generalized convex functions and a solution of a problem of Zs. Páles

J. Matkowski
2008
190

Generalized weighted arithmetic means

J. Matkowski
2012
166

Generalized weighted quasi-arithmetic means

J. Matkowski
2010
61

Geometrical convexity and generalization of the Bohr-Mollerup theorem on the Gamma function

D. Gronau, J. Matkowski
1993
65

Geometrically convex solutions of certain difference equation and generalized Bohr-Mollerup type theorems

D. Gronau, J. Matkowski
1994
171

Homogeneous means generated by a mean-value theorem

I. Pawlikowska, J. Matkowski
2010
23

Integrable solutions of a linear functional inequality

J. Matkowski
1978
19

Integrable solutions of functional equations

J. Matkowski
1975
135

Invariance in the class of weighted quasi-arithmetic means

J. Jarczyk, J. Matkowski
2006
208

Invariance of Bajraktarevic mean with respect to Beckenbach-Gini means

J. Matkowski
2013
194

Invariance of Bajraktarevic mean with respect to quasi arithmetic means and its relation to the classical harmony

J. Matkowski
2012
180

Invariance of Cauchy mean with respect to Lagrange mean-type mapping of the same generators

J. Matkowski
2011
197

Invariance of quasi-arithmetic mean with respect to a system of generalized Bajraktarevic means

J. Matkowski
2012
136

Invariance of the arithmetic mean with respect to special mean-type mappings

J. Domsta, J. Matkowski
2006
99

Invariant and complementary means

J. Matkowski
1999
199

Invariant graphs of functions for the mean-type mappings

J. Matkowski
2012
91

Iteration groups with generalized convex and concave elements

J. Matkowski
1997
151

Iteration groups, commuting functions and simultaneous systems of linear functional equations

J. Matkowski
2008
102

Iterations of mean-type mappings and invariant means

J. Matkowski
1999
157

Iterations of the mean-type mappings

J. Matkowski
2009
113

J. Ciag geometryczny - metoda rozwiazywania równań rekurencyjnych

J. Matkowski
2002
49

Lp-like paranorms

J. Matkowski
1991
133

Lagrangean mean-type mapping for which the arithmetic mean is invariant

J. Matkowski
2005
87

Lipschitzian composition operators in some Banach function spaces

J. Matkowski
1997
174

Local operators and a characterization of Volterra operator

J. Matkowski
2010
39

Locally defined operators in the space of differentiable functions

K. Lichawski, J. Miś, J. Matkowski
1989
144

Locally defined operators in the space of Whitney differentiable functions

M. Wróbel, J. Matkowski
2008
100

Mean value property and associated functional equation

J. Matkowski
1999
182

Mean-type mappings and invariant curves

J. Matkowski
2011
203

Mean-value property and characterizations of some elementary functions

J. Matkowski
2013
201

Mean-value theorem for vector-valued functions

J. Matkowski
2012
185

Mean-value type equalities where function and its derivative are interchanged

J. Matkowski
2011
89

Method of characteristic for functional equations in polynomial form

W. Zhang, J. Matkowski
1997
64

Nonlinear contractions in metrically convex space

J. Matkowski
1994
75

Nonlinear contractions on semimetric spaces

J. Jachymski, T. Świątkowski, J. Matkowski
1995
6

Note on a functional equation

J. Matkowski
1971
26

Note on iterations of some entire functions

W. Ogińska,  J. Matkowski
1979
138

O średnich w trapezie

J. Matkowski
2006
111

On ( α - a )-convex set valued functions

W. Ślepak, J. Matkowski
2002
69

On ( α ; a )-convex functions

M. Pycia, J. Matkowski
1995
40

On a characterization of Lp-norm

J. Matkowski
1989
79

On a characterization of Lp-norm and a converse of Minkowski's inequality

J. Matkowski
1996
55

On a characterization of Lp-norm with the aid of the triangle inequality

J. Matkowski
1993
30

On a characterization of Lipschitzian operators of substitution in the space BV[a,b]

J. Miś, J. Matkowski
1982
81

On a class of composite functional equations in a single variable

P. Kahlig, J. Matkowski
1996
122

On a composite functional equation

J. Okrzesik, J. Matkowski
2003
35

On a functional equation φ(x) = αφ(αx) + (1 - α)φ(1 - (1 - α )x)

Z. Kominek, J. Matkowski
1986
101

On a functional equation for Dido's problem

P. Kahlig, J. Matkowski
1999
209

On a functional equation related to competition

P. Kahlig, J. Matkowski
2013
58

On a generalization of Browder-Goehde-Kirk fixed point theorem

J. Matkowski
1993
52

On a generalization of Mulholland's inequality

J. Matkowski
1993
107

On a problem of Alsina again

M. Sablik, J. Matkowski
2001
73

On a system of simultaneous iterative functional equations

J. Matkowski
1995
46

On a-Wright convexity and the converse of Minkowski's inequality

J. Matkowski
1992
45

On an iteration group and its application to a proof of the converse of Minkowski's inequality theorem

J. Matkowski
1991
161

On Bellman equation for asymptotics of utility from terminal wealth

L. Stettner, J. Matkowski
2010
178

On Discounted Dynamic Programming with Unbounded Returns

A. S. Nowak, J. Matkowski
2011
24

On equivalence of some fixed point theorems for Selfmappings of Metrically Convex Space

B. Węgrzyk,  J. Matkowski
1978
155

On extension of solutions of a simultaneous systems if iterative functional equations

J. Matkowski
2009
114

On invariant generalized Beckenbach-Gini means

J. Matkowski
2002
108

On iteration semigroups of mean-type mappings and invariant means

J. Matkowski
2002
139

On iterations of means and functional equations

J. Matkowski
2006
103

On linear dependence of iterates

W. Zhang, J. Matkowski
2000
14

On Lipschitzian solutions of a functional equation

J. Matkowski
1973
191

On means which are quasi-arithmetic and of the Beckenbach-Gini type

J. Matkowski
2012
7

On meromorphic solutions of a functional equation II

J. Matkowski
1971
2

On meromorphic solutions of a functional equations

J. Matkowski
1970
115

On Mulholland's inequality

W. Jarczyk, J. Matkowski
2002
37

On Nemytskii Lipschitzian operator

J. Matkowski
1987
38

On Nemytskii operator

J. Matkowski
1988
21

On sequences of contraction mappings

K. Baron, J. Matkowski
1977
48

On some aspects of interpolation and functional equations

P. Kahlig, J. Matkowski
1991
67

On some extensions of the Gołąb-Schinzel functional equation

P. Kahlig, J. Matkowski
1994
172

On some generalizations of Gołąb-Schinzel functional equation

J. Okrzesik, J. Matkowski
2010
181

On some plane curves related to the olp-norm and the Euclidean norm

J. Bojarski, T. Małolepszy, J. Matkowski
2011
1

On some properties of solutions of a functional equations

J. Matkowski
1969
72

On stability of the homogeneity condition

Z. Kominek, J. Matkowski
1995
59

On subadditive functions

J. Matkowski
1993
123

On subadditive functions and ψ-additive mappings

J. Matkowski
2003
88

On the composition of homogeneous quasiarithmetic means

P. Kahlig, J. Matkowski
1997
8

On the continuous dependence of Cr solutions of a functional equation on given functions

J. Matkowski
1971
9

On the continuous dependence of local analytic solutions of a functional equation in a non-uniqueness case

J. Matkowski
1971
4

On the continuous dependence of local analytic solutions of a functional equation on given functions

J. Matkowski
1970
3

On the continuous dependence of solutions of a functional equation on given functions

J. Matkowski
1970
60

On the equality condition in Hölder's and Minkowski's inequalities

J. Rätz, J. Matkowski
1993
17

On the existence of a convex solution of a functional equation

Z. Kominek, J. Matkowski
1974
10

On the existence of differentiable solutions of a functional equation

J. Matkowski
1971
164

On the non-reducibility of non-stationary correlation functions to stationary ones under a class of mean p-operator transformations

E. Porcu, J. Mateu, J. Matkowski
2010
106

On the polynomial-like iterative functional equation

W. Zhang, J. Matkowski
2000
13

On the solutions fulfilling a Lipschitz condition of a nonlinear functional equation

K. Baron, J. Matkowski
1972
5

On the uniqueness of differentiable solutions of a functional equation

J. Matkowski
1970
169

On weighted extensions of Beckenbach-Gini means

J. Matkowski
2010
137

On weighted extensions of Cauchy's means

J. Matkowski
2006
206

Persistently Optimal Policies in Stochastic Dynamic Programming with Generalized Discounting

A. Jaśkiewicz, A. S. Nowak, J. Matkowski
2013
195

Pexider type generalization of the Minkowski inequality

J. Matkowski
2012
205

Pointwise monotonic functions and generalized subadditivity

J. Matkowski
2013
77

Positive homogeneous functionals related to Lp-norms

M. Pycia, J. Matkowski
1996
183

Power means generated by some mean-value theorems

J. Matkowski
2011
196

Quadratic inequalities and a characterization of inner product

J. Matkowski
2012
150

Quasi Arithmetic Covariance Functions and their Possible Reducibility through Functional Equations

Emilio Porcu, Jorge Mateu, J. Matkowski
2008
43

Quasi-monotonicity, subadditive bijections of R+ and characterization of Lp-norm

T. Świątkowski, J. Matkowski
1991
186

Quotient mean, its invariance with respect to a quasi-arithmetic mean-type mapping, and some applications

J. Matkowski
2011
32

Remark on BV -solutions of a functional equation connected with invariant measures

J. Matkowski
1985
74

Remark on Generalization of Minkowski's inequality

J. Jelínek, J. Matkowski
1995
70

Remark on globally Lipschitzian composition operators

A. Matkowska, N. Merentes, J. Matkowski
1995
27

Remarks on a fixed point theorem

Z. Benedykt, J. Matkowski
1981
142

Remarks on Lipschitzian mappings and some fixed point theorems

J. Matkowski
2007
71

Remarks on multiplication of subadditive functions

J. Matkowski
1995
104

Remarks on quasi-arithmetic means

W. Jarczyk, J. Matkowski
2000
126

Remarks on some problems of Th. M. Rassias

J. Matkowski
2004
153

Representation theorem for locally defined operators in the space of Whitney differentiable functions

M. Wróbel, J. Matkowski
2009
112

Representation theorem for locally defined operators in the space of Whitney differentiable functions

M.Wróbel, J. Matkowski
2002
200

Results of Tadeusz Świątkowski on algebraic sums of sets and their applications in the theory of subadditive functions

J. Matkowski
2012
92

Round of stability of functional iterations on product spaces

S. L. Singh, J. Matkowski
1997
127

Solution of regularity problem in equality of Cauchy means

J. Matkowski
2004
120

Solution of Z. Daróczy problem on mixing quasi-arithmetic means

P. Kahlig, J. Matkowski
2003
11

Solutions of a functional equation in a special class of functions

M. Kuczma, J. Matkowski
1972
18

Solutions of bounded variation of a linear functional equation

M. Zdun , J. Matkowski
1974
53

Solutions of some functional inequalities connected with convex functions

K. Nikodem, J. Matkowski
1993
15

Some inequalities and generalization of Banach's principle

J. Matkowski
1973
34

Some remarks on a problem of C. Alsina

M. Sablik, J. Matkowski
1986
51

Subadditive functions and a relaxation of the homogeneity condition of seminorms

J. Matkowski
1993
54

Subadditive functions and partial converses of Minkowski's and Mulholland's inequalities

T. Świątkowski, J. Matkowski
1993
177

Subadditive periodic functions

J. Matkowski
2011
207

Subhomogeneity of the Lp-norm like functionals

J. Matkowski
2013
110

Średnie i związane z nimi ciągi

J. Matkowski
2002
173

The bounded local operators in the space of Hölder functions

M. Wróbel, J. Matkowski
2010
84

The converse of a generalized Hölder inequality

J. Matkowski
1997
62

The converse of the Hölder inequality and its generalizations

J. Matkowski
1994
41

The converse of the Minkowski's inequality theorem and its generalization

J. Matkowski
1990
128

The converse theorem for Minkowski's inequality

J. Matkowski
2004
130

The Gołąb-Schinzel functional equation restricted to ab- half-lines

P. Kahlig, J. Matkowski
2004
12

The uniqueness of solutions of a system of functional equations in some special classes of functions

J. Matkowski
1972
187

Uniformly bounded composition operators between general Lipschitz function normed spaces

J. Matkowski
2011
192

Uniformly bounded composition operators in the Banach space of absolutely continuous functions

D. Głazowska, N. Merentes, J. L. Sánchez Hernández, J. Matkowski
2012
188

Uniformly bounded Nemytskij operators generated by set-valued functions between generalized Hölder function spaces

M. Wróbel, J. Matkowski
2011
193

Uniformly bounded set-valued Nemytskij operators acting between generalized Hölder function spaces

M. Wróbel, J. Matkowski
2012
159

Uniformly continuous composition operators in the space of bounded φ-variation functions

J. A. Guerrero, H. Leiva, N. Merentes, J. Matkowski
2010
163

Uniformly continuous composition operators in the space of functions of two variables of bounded φ-variation in the sense of of Wiener

J. A. Guerreo, N. Merentes, J. Matkowski
2010
162

Uniformly continuous set-valued com- position operators in the spaces of functions of bounded variation in the sense of Riesz

W. Aziz, N. Merentes, J. Matkowski
2010
160

Uniformly continuous set-valued composition operators in the space of continuous functions of bounded variation in the sense of Wiener

A. Azócar, J. A. Guerero, N. Merentes, J. Matkowski
2010
165

Uniformly continuous superposition operators in the space of bounded variation functions

J. Matkowski
2010
154

Uniformly continuous superposition operators in the space of Hölder functions

J. Matkowski
2009
147

Uniformly continuous superposition operators in the spaces of differentiable functions and absolutely continuous functions

J. Matkowski
2008
141

When M -convexity of a function implies its N -convexity for some means M and N

J. Matkowski
2007


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