Results 1 to 10 of about 1,111,321 (239)

On a Functional Equation [PDF]

open access: bronzeThe Quarterly Journal of Mathematics, 1960
We have recently discussed in (1) the general solution of a certain functional equation arising in statistical thermodynamics, and we propose in this note to deal with another functional equation arising from the same source(2).The problem is to obtain the most general function f(x) which, for all positive integral values of m, n, satifies the ...
T. W. Chaundy, J. B. McLeod
openalex   +4 more sources

A general functional equation [PDF]

open access: bronzeTransactions of the American Mathematical Society, 1957
J. H. B. Kemperman
  +5 more sources

Minimum functional equation and some Pexider-type functional equation on any group

open access: yesAIMS Mathematics, 2021
We discuss the solution to the minimum functional equation $ \begin{align} \min \{\, \eta(xy^{-1}), \eta(xy) \, \} = \eta(x)\eta(y), \qquad x, y \in G, \end{align} $ for a real-valued function $ \eta: G \to \mathbb{R} $ defined on arbitrary ...
Muhammad Sarfraz, Yongjin Li
doaj   +1 more source

Approximation of involution in multi-Banach algebras: Fixed point technique

open access: yesAIMS Mathematics, 2021
In this research work, we demonstrate the Hyers-Ulam stability for Cauchy-Jensen functional equation in multi-Banach algebras by the fixed point technique. In fact, we prove that for a function which is approximately Cauchy-Jensen in multi Banach algebra,
Ehsan Movahednia   +2 more
doaj   +1 more source

Problems of Lithuanian mathematical olympiad’07

open access: yesLietuvos Matematikos Rinkinys, 2021
The problems of the Lithuanian school olympiad-2007 are presented and solutions are given.
Juozas Juvencijus Mačys
doaj   +1 more source

Conjugate functions, L^{p}-norm like functionals, the generalized Hölder inequality, Minkowski inequality and subhomogeneity [PDF]

open access: yesOpuscula Mathematica, 2014
For \(h:(0,\infty )\rightarrow \mathbb{R}\), the function \(h^{\ast }\left( t\right) :=th(\frac{1}{t})\) is called \((\ast)\)-conjugate to \(h\). This conjugacy is related to the Hölder and Minkowski inequalities.
Janusz Matkowski
doaj   +1 more source

Functional extreme learning machine

open access: yesFrontiers in Computational Neuroscience, 2023
IntroductionExtreme learning machine (ELM) is a training algorithm for single hidden layer feedforward neural network (SLFN), which converges much faster than traditional methods and yields promising performance.
Xianli Liu   +6 more
doaj   +1 more source

Counting Lattice Paths by Using Difference Equations with Non-constant Coefficients

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2023
The lattice paths can be counted by the virtue of their step vectors that are aligned to the positive octant. A path can go from one point to an infinite others if there is no restriction applied such that each point only has finitely many predecessors ...
S. Chandragiri
doaj   +1 more source

Functional equations and martingales [PDF]

open access: yesAequationes mathematicae, 2021
We consider functional equations (Cauchy's, Abel's and some other functional equations) and show that to find general solution of these equations is equivalent to establish that a space-transformation of a Brownian Motion by suitable function (or functions) is a martingale.
M. Mania, L. Tikanadze
openaire   +3 more sources

Mutually homogeneous functions I. Matrices of the finite size

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2020
This publication continues the study of the properties of Euler homogeneous functions that can be used in the synthesis of electric and magnetic fields of electron and ion-optical systems to carry out spectrographic mode record.
Berdnikov Alexander   +2 more
doaj   +1 more source

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