Results 11 to 20 of about 63,391 (265)

Cauchy′s functional equation in restricted complex domains [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
Using a method modified from that used by Pisot and Schoenberg in 1964‐1965, a Cauchy′s functional equation with restricted domains in the complex field is solved for uniformly continuous solutions.
Watcharapon Pimsert   +2 more
openaire   +3 more sources

The Cauchy-Riemann Differential Equations of Complex Functions [PDF]

open access: yesFormalized Mathematics, 2009
Summary. In this article we prove Cauchy-Riemann dierential equations of complex functions. These theorems give necessary and sucient condition for dierentiable function.
Hiroshi Yamazaki   +3 more
openaire   +2 more sources

Textural characteristics of composite adsorbents analyzed with density functional theory and self-consistent regularization procedure

open access: yesХімія, фізика та технологія поверхні, 2020
Highly disperse or porous complex and hybrid materials and nanocomposites characterized by the presence of several phases, nonuniform particulate morphology, and complicated porosity with contributions of pores of various shapes are widely used in ...
V. M. Gun'ko
doaj   +1 more source

Family of the Atomic Radial Basis Functions of Three Independent Variables Generated by Helmholtz-Type Operator

open access: yesEast European Journal of Physics, 2021
The paper presents an algorithm for constructing the family of the atomic radial basis functions of three independent variables  generated by Helmholtz-type operator, which may be used as basis functions for the implementation of meshless methods for ...
Denys Protektor
doaj   +1 more source

Time-Optimal Trajectory Planning of Six-Axis Manipulators Based on the Improved Direct Collocation Method with FMU

open access: yesApplied Sciences, 2022
The trajectory planning method with dynamics is the key to improving the motion performance of manipulators. The optimal control method (OCM) is a key technology to solve optimal problems with dynamics.
Ziyao Xiong, Jianwan Ding, Liping Chen
doaj   +1 more source

On the Calculation of Functional Safety Parameters of Technical Systems [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2020
Now the scientific methodology is created, the theory and practice of the analysis and synthesis of functional safety of responsible electronic programmable devices and systems at all stages of their life cycle are developed.
Igor B. Shubinskiy   +2 more
doaj   +1 more source

Some Properties on Complex Functional Difference Equations [PDF]

open access: yesAbstract and Applied Analysis, 2014
We obtain some results on the transcendental meromorphic solutions of complex functional difference equations of the form∑λ∈Iαλ(z)(∏j=0nf(z+cj)λj)=R(z,f∘p)=((a0(z)+a1(z)(f∘p)+ ⋯ +as(z) (f∘p)s)/(b0(z)+b1(z)(f∘p)+ ⋯ +bt(z)(f∘p)t)), whereIis a finite set of multi-indexesλ=(λ0,λ1,…,λn),c0=0,cj∈ℂ∖{0} (j=1,2,…,n)are distinct complex constants,p(z)is a ...
Huang, Zhi-Bo, Zhang, Ran-Ran
openaire   +3 more sources

On a functional equation for the exponential function of a complex variable [PDF]

open access: yesGlasgow Mathematical Journal, 1971
The following result is well known in the theory of analytic functions; see [1].Theorem A. Suppose that f(z) is an entire function of a complex variable z. Then f(z) satisfies the functional equationwhere z = x + iy (x, y real), if and only if f(z) = aexp(sz), where a is an arbitrary complex constant and s is an arbitrary real constant.
openaire   +1 more source

Nonlinear Pantograph-Type Diffusion PDEs: Exact Solutions and the Principle of Analogy

open access: yesMathematics, 2021
We study nonlinear pantograph-type reaction–diffusion PDEs, which, in addition to the unknown u=u(x,t), also contain the same functions with dilated or contracted arguments of the form w=u(px,t), w=u(x,qt), and w=u(px,qt), where p and q are the free ...
Andrei D. Polyanin, Vsevolod G. Sorokin
doaj   +1 more source

A new functional equation of Pexider type related to the complex exponential function [PDF]

open access: yesTransactions of the American Mathematical Society, 1995
The purpose of this paper is to solve a new functional equation, characteristic for the complex exponential function, which contains four unknown entire functions and to solve, as an application, three further functional equations.
Haruki, Hiroshi   +1 more
openaire   +2 more sources

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