Výsledky vyhľadávania - "Functional equations for functions with more general domains and/or ranges"

Generalizations of Van Vleck’s functional equation on semigroups: Generalizations of Van Vleck's functional equation on semigroups

Autori: Youssef Aserrar Elhoucien Elqorachi

Zdroj: Rendiconti del Circolo Matematico di Palermo Series 2. 74

Predmety: automorphism, semigroup, Van Vleck's functional equation, Functional equations for functions with more general domains and/or ranges, multiplicative function, measure

Popis súboru: application/xml

Kannappan–Wilson and Van Vleck–Wilson functional equations on semigroups: Kannappan-Wilson and van Vleck-Wilson functional equations on semigroups

Autori: Aserrar, Y. Elqorachi, E.

Zdroj: Acta Mathematica Hungarica. 173:193-213

Predmety: Mathematics - Functional Analysis, automorphism, semigroup, Wilson's functional equation, FOS: Mathematics, 39B52 (Primary), 39B32 (Secondary), Functional equations for functions with more general domains and/or ranges, Functional equations for complex functions, measure, van Vleck's functional equation, Functional Analysis (math.FA)

Popis súboru: application/xml

Prístupová URL adresa: http://arxiv.org/abs/2405.03835
https://zbmath.org/7915661
https://doi.org/10.1007/s10474-024-01433-y

Hyers–Ulam stability of norm-additive functional equations via $(\delta , \epsilon )$-isometries: Hyers-Ulam stability of norm-additive functional equations via \((\delta, \epsilon)\)-isometries

Autori: Muhammad Sarfraz Jiang Zhou Yongjin Li

Zdroj: Journal of Inequalities and Applications, Vol 2025, Iss 1, Pp 1-16 (2025)

Predmety: Hyers–Ulam stability, Banach space, Perturbations of functional-differential equations, Functional analysis techniques applied to functions of several complex variables, isometry, QA1-939, norm-additive functional equations, Functional equations for functions with more general domains and/or ranges, Stability, separation, extension, and related topics for functional equations, Hyers-Ulam stability, Isometry, Norm-additive functional equations, Mathematics

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/8034439
https://doi.org/10.1186/s13660-024-03233-y
https://doaj.org/article/ae7eceda9b9a4c638346eaa28278840b

Alienation and stability of Jensen’s and other functional equations: Alienation and stability of Jensen's and other functional equations

Autori: Tial, Mohamed Zeglami, Driss

Zdroj: Aequationes mathematicae. 99:275-286

Predmety: additivity, alienation, exponential Cauchy equation, Stability, separation, extension, and related topics for functional equations, Functional equations for functions with more general domains and/or ranges, Drygas functional equation, Functional inequalities, including subadditivity, convexity, etc, stability, Jensen's equation

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/8009183
https://doi.org/10.1007/s00010-024-01046-4

Exponential semi-polynomials and their characterization on semigroups

Autori: Bruce Ebanks

Zdroj: Aequationes mathematicae. 99:321-333

Predmety: Semigroups of transformations, relations, partitions, etc, Spectral synthesis on groups, semigroups, etc, polynomial, topological semigroup, semigroup, exponential polynomial, tractable prime ideal, Functional equations for functions with more general domains and/or ranges, exponential semi-polynomial

Popis súboru: application/xml

Continuous dependence of the weak limit of iterates of some random-valued vector functions

Autori: Komorek, Dawid

Zdroj: Aequationes mathematicae. 97:753-776

Predmety: random-valued function, invariant measure, iterative equation, Functional equations for functions with more general domains and/or ranges, Iteration theory, iterative and composite equations, random iteration, 0101 mathematics, Iteration of real functions in one variable, 01 natural sciences, Random iteration, Hutchinson distance, Fortet-Mourier distance, random affine map

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/7697387
https://doi.org/10.1007/s00010-023-00959-w

Additive relations

Autori: Szaz, A. Szaz, G.

Zdroj: Publicationes Mathematicae Debrecen. 20:259-272

Predmety: Other classical set theory (including functions, relations, and set algebra), Structure theory of algebraic structures, Functional equations for functions with more general domains and/or ranges, 0102 computer and information sciences, 0101 mathematics, 01 natural sciences

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3563211

On a functional equation characterizing inner product spaces

Autori: Alsina, Claudi García Roig, Jaime L.

Zdroj: Publicationes Mathematicae Debrecen. 39:299-304

Predmety: norm, convex functional, additive function, linear automorphism, Hilbert and pre-Hilbert spaces: geometry and topology (including spaces with semidefinite inner product), linear independence, Functional equations for functions with more general domains and/or ranges, continuous surjection, functional equation, 0101 mathematics, characterization of inner product space, 01 natural sciences

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/61526

On measurable solutions of functional equations

Autori: Jarai, Antal

Zdroj: Publicationes Mathematicae Debrecen. 26:17-35

Predmety: bounded solutions, metric spaces, Metric spaces, metrizability, Functional equations for functions with more general domains and/or ranges, continuous solutions, 0101 mathematics, Measurable and nonmeasurable functions, sequences of measurable functions, modes of convergence, 01 natural sciences, measurable solutions, Functional equations and inequalities

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3674641

On the convergence of iterated Pilgerschritt transformation in nilpotent Lie groups

Autori: Netzer, N. Reitberger, H.

Zdroj: Publicationes Mathematicae Debrecen. 29:309-314

Predmety: iterated Pilgerschritt transforms, Cr-path, Analysis on real and complex Lie groups, matrix differential equation, Nilpotent and solvable Lie groups, Dynamics induced by flows and semiflows, translation equation, Lie algebras of Lie groups, homotopy, Functional equations for functions with more general domains and/or ranges, 0101 mathematics, 01 natural sciences, free algebra

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3836361

Generalized difference-property for functions of several variables

Autori: Lajko, K.

Zdroj: Publicationes Mathematicae Debrecen. 25:169-176

Predmety: Ordered Field, Functional Equations on Abstract Structures, Jensen-Function, Ordered fields, Additive Abelian Group, Functional equations for functions with more general domains and/or ranges, 0101 mathematics, 01 natural sciences

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3633036

Analytische und fraktionelle Iteration formal-biholomorpher Abbildungen und Differenzenrechnung

Autori: Reich, Ludwig

Zdroj: Publicationes Mathematicae Debrecen. 27:49-60

Predmety: Real-analytic manifolds, real-analytic spaces, Matrix and operator functional equations, biholomorphic mappings, Functional equations for functions with more general domains and/or ranges, Formal power series rings, 0101 mathematics, 01 natural sciences, analytic and fractional iteration

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3712509

On Cauchy's nucleus

Autori: Grzaslewicz, A. Powazka, Z. Tabor, J.

Zdroj: Publicationes Mathematicae Debrecen. 25:47-51

Predmety: Existence of Solutions, Functional Equations on Algebraic Structures, Functional equations for functions with more general domains and/or ranges, 0101 mathematics, 01 natural sciences, Functional equations and inequalities, Necessary and Sufficient Conditions

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3616860

On quadratic set valued functions

Autori: Nikodem, Kazimierz

Zdroj: Publicationes Mathematicae Debrecen. 30:297-301

Predmety: Functional equations for functions with more general domains and/or ranges, quadratic functionals, 0101 mathematics, set valued functions, 01 natural sciences, Functional equations and inequalities

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3853649

A sine functional equation in Banach algebras

Autori: Nagy, B.

Zdroj: Publicationes Mathematicae Debrecen. 24:77-90

Predmety: Banach algebras of continuous functions, function algebras, Functional equations for functions with more general domains and/or ranges, 0101 mathematics, 01 natural sciences

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3577703

Almost additive functions on Ehresmann groupoids

Autori: Baster, Janusz

Zdroj: Publicationes Mathematicae Debrecen. 37:175-180

Predmety: Functional equations for functions with more general domains and/or ranges, almost additive functions, 0101 mathematics, Ehresmann groupoid, 01 natural sciences, Groupoids (i.e. small categories in which all morphisms are isomorphisms), linearly invariant ideals, almost additivity

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/9554

On the solutions of the functional equation $f(xf(y)^l+yf(x)^k)=tf(x)f(y)$: On the solutions of the functional equation \(f(xf(y)^ l + yf(x)^ k) = tf(x)f(y)\)

Autori: Brzdȩk, Janusz

Zdroj: Publicationes Mathematicae Debrecen. 38:175-183

Predmety: Functional equations for real functions, Functional equations for functions with more general domains and/or ranges, continuous solutions, linear space, 0101 mathematics, 01 natural sciences

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/21993

Analytic solutions of Schröder equation

Autori: Smajdor, Wilhelmina

Zdroj: Publicationes Mathematicae Debrecen. 26:149-153

Predmety: analytic solutions in Banach spaces, Functional equations for functions with more general domains and/or ranges, Iteration theory, iterative and composite equations, Schröder functional equation, Functional equations in the complex plane, iteration and composition of analytic functions of one complex variable, 0101 mathematics, 01 natural sciences

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3695755

Remarks on Hyers's theorem

Autori: Székelyhidi, László

Zdroj: Publicationes Mathematicae Debrecen. 34:131-135

Predmety: semigroup, Functional equations for functions with more general domains and/or ranges, amenability, Difference operators, seminorm, 0101 mathematics, 01 natural sciences, stability of linear functional equations, difference operators

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/4019642

Local polynomials and functional equations

Autori: Székelyhidi, László

Zdroj: Publicationes Mathematicae Debrecen. 30:283-290

Predmety: local polynomials, topological Abelian groups, Functional equations for functions with more general domains and/or ranges, local mean value property, 0101 mathematics, continuous solution, square functional equation, 01 natural sciences, Functional equations and inequalities

Popis súboru: application/xml

Prístupová URL adresa: https://zbmath.org/3859650