Results 1 to 10 of about 80,913 (146)

Theory of nth-order linear general quantum difference equations [PDF]

open access: yesAdvances in Difference Equations, 2018
In this paper, we derive the solutions of homogeneous and non-homogeneous nth-order linear general quantum difference equations based on the general quantum difference operator Dβ $D_{\beta }$ which is defined by Dβf(t)=(f(β(t))−f(t))/(β(t)−t) $D_{\beta }
Nashat Faried   +2 more
doaj   +3 more sources

Modeling the stress-strain state of variable-thickness composite shells and plates [PDF]

open access: yesE3S Web of Conferences, 2023
A model for calculating the stress-strain state of variablethickness composite shells has been developed, based on assumptions such us the classical theory of Timoshenko-Mindlin shells. In the proposed model, the plate thickness is given by a function of
Dimitrienko Yu., Zakharova Yu.
doaj   +1 more source

On the Lie symmetries of the boundary value problems for differential and difference sine-Gordon equations

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2021
In general, due to the nature of the Lie group theory, symmetry analysis is applied to single equations rather than boundary value problems. In this paper boundary value problems for the sine-Gordon equations under the group of Lie point symmetries are ...
O. Yildirim, S. Caglak
doaj   +1 more source

On solvability of some difference-discrete equations [PDF]

open access: yesOpuscula Mathematica, 2016
Multidimensional difference equations in a discrete half-space are considered. Using the theory of periodic Riemann problems a general solution and solvability conditions in discrete Lebesgue spaces are obtained.
Alexander V. Vasilyev   +1 more
doaj   +1 more source

NUMERICAL ANALYSIS OF THE CAUCHY PROBLEM FOR A WIDE CLASS FRACTAL OSCILLATORS [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2018
The Cauchy problem for a wide class of fractal oscillators is considered in the paper and its numerical investigation is carried out using the theory of finite-difference schemes.
R. I. Parovik
doaj   +1 more source

General theory of linear difference equations [PDF]

open access: yesTransactions of the American Mathematical Society, 1911
The theory of lirlear diflerence equations with ratiollal coefficients was in a very backward state until POINCARG t in 1882 developed the notion of asymptotic representation, and its application to this brallch of mathematics. Further important progress ill this direction has been made only very recently, notably by GALBRUN,?
openaire   +1 more source

On Correctness of Cauchy problem for a Polynomial Difference Operator with Constant Coefficients

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2018
The theory of linear difference equations is applied in various areas of ma\-the\-matics and in the one-dimensional case is quite established. For $n>1$, the situation is much more difficult and even for the constant coefficients a general description of
M. S. Apanovich, E.K. Leinartas
doaj   +1 more source

On the Discrete Version of the Schwarzschild Problem

open access: yesUniverse, 2020
We consider a Schwarzschild type solution in the discrete Regge calculus formulation of general relativity quantized within the path integral approach. Earlier, we found a mechanism of a loose fixation of the background scale of Regge lengths.
Vladimir Khatsymovsky
doaj   +1 more source

A general theory of finite state Backward Stochastic Difference Equations

open access: yesStochastic Processes and their Applications, 2010
25 pages, final preprint prior to ...
Cohen, S., Elliott, R.
openaire   +3 more sources

Chaotification schemes for first-order partial difference equations via sawtooth functions

open access: yes上海师范大学学报. 自然科学版, 2019
This paper is concerned with chaotification problems of first-order partial difference equations with non-period boundary conditions. Two chaotification schemes for the difference equations via sawtooth functions are established, and all the controlled ...
LIANG Wei, SHI Yuming
doaj   +1 more source

Home - About - Disclaimer - Privacy