Results 21 to 30 of about 4,021,890 (300)

Exact solutions of the classical Boussinesq system

open access: yesArab Journal of Basic and Applied Sciences, 2018
In this paper, we study exact solutions of the classical Boussinesq (CB) system, which describes propagations of shallow water waves. By using the bilinear form, with exponential expansions, we obtain solitary wave solutions of the CB system.
Hong-Qian Sun, Ai-Hua Chen
doaj   +1 more source

Stability Chaos and Periodic Solution of Delayed Rational Recursive Sequence

open access: yesPan-American Journal of Mathematics, 2022
In this paper, we will investigate a non-linear rational difference equation of higher order. Our concentration is on invariant intervals, periodic character, the character of semi cycles and global asymptotic stability of all positive solutions of sn+1=
Abdul Khaliq   +2 more
doaj   +1 more source

Rational and semi-rational solutions to the Davey–Stewartson III equation

open access: yesNonlinear Dynamics, 2022
Abstract In this paper, based on the combination of Hirota’s bilinear method and long wave limit technique, we investigate rational and semi-rational solutions to the third-type Davey-Stewartson (DS III) equation and its nonlocal version. Rational solutions to the DS III equation demonstrate to be kinks, lumps and line rogue waves, while semi ...
Shengnan Wang, Guo-Fu Yu
openaire   +1 more source

A Green's function for diffraction by a rational wedge [PDF]

open access: yes, 1989
In this paper we derive an expression for the point source Green's function for the reduced wave equation, valid in an angular sector whose angle is equal to a rational multiple of 77.
Rawlins, AD
core   +1 more source

A hypothetical upper bound on the heights of the solutions of a Diophantine equation with a finite number of solutions

open access: yesOpen Computer Science, 2018
We define a computable function f from positive integers to positive integers. We formulate a hypothesis which states that if a system S of equations of the forms xi· xj = xk and xi + 1 = xi has only finitely many solutions in non-negative integers x1, .
Tyszka Apoloniusz
doaj   +1 more source

A deliberative solution to the social choice problem [PDF]

open access: yesFilozofija i Društvo, 2011
Is there a sense in which society makes rational decision in a democratic way that is similar to individual rational decision-making? Social choice theory claims that rational social choice is not possible.
Mladenović Ivan
doaj   +1 more source

Rational solutions of Abel differential equations

open access: yesJournal of Mathematical Analysis and Applications, 2022
19 ...
J.L. Bravo   +3 more
openaire   +2 more sources

The effectiveness of rational-emotional therapy and solution focused group therapy on social anxiety disorder in students of Shiraz University [PDF]

open access: yesروانشناسی و روانپزشکی شناخت, 2019
Introduction: Despite the high prevalence and unpleasant consequences of social anxiety disorder in university students, little research has been done to determine the most effective treatment for SAD.
Mansooreh Mahdiyar   +3 more
doaj   +1 more source

On a Class of Rational and Mixed Soliton-Rational Solutions of the Toda Lattice [PDF]

open access: yesProgress of Theoretical Physics, 1996
A class of rational solutions of Toda lattice satisfying certain Backlund transformations and a class of mixed rational-soliton solutions (quasisolitons) in wronskian formare obtained using the method of Ablowitz and Satsuma. Also an extended class of rational solutions are found using an appropriate recursion relation.
Cârstea, A. S., Grecu, D.
openaire   +2 more sources

On a class of linear ordinary differential equations having ∑k=0∞xkδ(k)(t) and ∑k=0mxkδ(k)(t) as solutions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
We introduced some linear homogeneous ordinary differential equations which have both formal and finite distributional solutions at the same time, where the finite solution is a partial sum of the formal one.
Ahmed D. Alawneh, Ahmed Y. Farah
doaj   +1 more source

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