Results 41 to 50 of about 44,343,636 (185)

On the strauss index of semilinear tricomi equation

open access: yesCommunications on Pure and Applied Analysis, 2020
In our previous papers, we have given a systematic study on the global existence versus blowup problem for the small-data solution \begin{document}$ u $\end{document} of the multi-dimensional semilinear Tricomi equation \begin{document}$ \begin{equation*}
Dao-Yin He, I. Witt, Huicheng Yin
semanticscholar   +1 more source

General Tricomi–Rassias problem and oblique derivative problem for generalized Chaplygin equations [PDF]

open access: yes, 2007
Many authors have discussed the Tricomi problem for some second order equations of mixed type, which has important applications in gas dynamics. In particular, Bers proposed the Tricomi problem for Chaplygin equations in multiply connected domains [L ...
Wen, Guochun   +2 more
core   +1 more source

The problem with Saigo operators for a hyperbolic equation that degenerates inside the domain

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2017
A nonlocal problem is investigated for a degenerate hyperbolic equation $$ |y|^{m} u_{xx}-u_{yy}+a |y|^{\frac{m}{2}-1} u_{x}=0 $$ in a domain bounded by the characteristics of this equation.
Oleg A Repin
doaj   +1 more source

Existence of Solutions of Semilinear Wave Equations With Time‐Dependent Propagation Speed and Time Derivative Nonlinearity

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 9, Page 8681-8690, June 2026.
ABSTRACT Consider wave equations with time derivative nonlinearity and time‐dependent propagation speed which are generalized versions of the wave equations in the Friedmann–Lemaître–Robertson–Walker (FLRW) spacetime, the de Sitter spacetime and the anti‐de Sitter space time.
Kimitoshi Tsutaya, Yuta Wakasugi
wiley   +1 more source

Well-posedness of Tricomi-Gellerstedt-Keldysh-type fractional elliptic problems [PDF]

open access: yes, 2022
16 pages16 pages16 pagesIn this paper Tricomi-Gellerstedt-Keldysh-type fractional elliptic equations are studied. The results on the well-posedness of fractional elliptic boundary value problems are obtained for general positive operators with discrete ...
Turmetov, BK, Ruzhansky, M, Torebek, BT
core   +2 more sources

Loading Non‐Maxwellian Velocity Distributions in Particle Simulations

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Numerical procedures for generating non‐Maxwellian velocity distributions in particle simulations are presented. First, Monte Carlo methods for the (r,q) $(r,q)$ distribution that generalizes flattop and Kappa distributions are discussed. Then, two rejection methods for the regularized Kappa distribution are presented, followed by a comparison
Seiji Zenitani   +2 more
wiley   +1 more source

Stochastic Delay Bound Prediction Enabled by Network Calculus in TSN‐5G Cross‐Domain Networks

open access: yesIET Communications, Volume 20, Issue 1, January/December 2026.
The Industrial Internet's expansion intensifies the need for low‐latency, high‐reliability end‐to‐end deterministic networks. While TSN‐5G integration offers a promising path, complex delay bound prediction and inherent stochastic fluctuations persist as key bottlenecks, causing substantial delay jitter and reliability degradation.
Jiming Yao   +4 more
wiley   +1 more source

Turan Type Inequalities for Tricomi Confluent Hypergeometric Functions

open access: yes, 2013
Some sharp two-sided Turan type inequalities for parabolic cylinder functions and Tricomi confluent hypergeometric functions are deduced. The proofs are based on integral representations for quotients of parabolic cylinder functions and Tricomi confluent
Baricz, Árpád, Ismail, Mourad E.H.
core   +2 more sources

A Lucas Operational Matrix Method for Solving Nonlinear Fractional Two‐Dimensional Partial Volterra Integral Equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2026, Issue 1, 2026.
This paper introduces a new numerical method for solving a class of two‐dimensional fractional partial Volterra integral equations (2DFPVIEs). Our approach uses Lucas polynomials (LPs) to construct operational matrices (OMs) that effectively transform the complex fractional‐order equations into a more manageable system of algebraic equations.
S. S. Gholami   +4 more
wiley   +1 more source

On ℬ‐Analog of the Sumudu Transform Associated With the General Quantum ℬ‐Difference Operator

open access: yesJournal of Mathematics, Volume 2026, Issue 1, 2026.
We present here a B‐analog of the Sumudu transform defined via a general quantum B‐difference operator which generalizes classical difference operators in the context of quantum calculus, is employed to study the proposed problem. We explore the core characteristics of the B‐Sumudu transform and illustrate its applications in solving B‐initial value ...
Karima M. Oraby   +2 more
wiley   +1 more source

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