Results 11 to 20 of about 1,795,811 (300)

Graph products of groups [PDF]

open access: yes, 1990
In the 1970's Baudisch introduced the idea of the semifree group, that is, a group in which the only relators are commutators of generators. Baudisch was mainly concerned with subgroup problems, employing length arguments on the elements of these groups.
Green, E.R, Green, Elisabeth Ruth
core   +9 more sources

On the stochastic Allen–Cahn equation on networks with multiplicative noise

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
We consider a system of stochastic Allen–Cahn equations on a finite network represented by a finite graph. On each edge in the graph a multiplicative Gaussian noise driven stochastic Allen–Cahn equation is given with possibly different potential barrier ...
Mihály Kovács, Eszter Sikolya
doaj   +1 more source

Graph Equation for Line Graphs and m-Step Graphs [PDF]

open access: yesGraphs and Combinatorics, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Seog-Jin Kim   +4 more
openaire   +1 more source

A Theoretical Analysis of a Fractional Multi-Dimensional System of Boundary Value Problems on the Methylpropane Graph via Fixed Point Technique

open access: yesMathematics, 2022
Few studies have investigated the existence and uniqueness of solutions for fractional differential equations on star graphs until now. The published papers on the topic are based on the assumption of existence of one junction node and some boundary ...
Shahram Rezapour   +5 more
doaj   +1 more source

Wave Effects of the Fractional Shallow Water Equation and the Fractional Optical Fiber Equation

open access: yesFrontiers in Applied Mathematics and Statistics, 2022
The non-linear space-time fractional Estevez-Mansfield-Clarkson (EMC) equation and the non-linear space-time fractional Ablowitz-Kaup-Newell-Segur (AKNS) equation showed the motion of waves in the shallow water equation and the optical fiber equation ...
Sirasrete Phoosree, Weerachai Thadee
doaj   +1 more source

Numerical solution of axisymmetric problem of the theory of elasticity on the basis of continuum graph model

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
A numerical method for analysis of the stress strain state of elastic media based on a discrete model in form of directed graph is suggested. To analyze a deformable body using the graph approach, we partition a solid body on elements and replace each ...
Alexander A Tyrymov
doaj   +3 more sources

The novel existence results of solutions for a nonlinear fractional boundary value problem on the ethane graph

open access: yesAlexandria Engineering Journal, 2021
Chemical graph theory is a branch of mathematics that combines graph theory and chemistry and discusses the effect of research on “serious” or “pure” mathematics.
Ali Turab, Wutiphol Sintunavarat
doaj   +1 more source

DIFFERENTIAL EQUATIONS ON GRAPHS [PDF]

open access: yesMathematics of the USSR-Sbornik, 1972
Summary: The differential equations encountered in various applications may be treated as equations on graphs. In the paper it is shown that the structure of the graph allows us to investigate the properties of the solutions of such equations.
openaire   +2 more sources

Graphs and Equations [PDF]

open access: yes, 2020
Although we have introduced the conceptual basis for multilevel analysis in earlier chapters, it remains a statistical method; this chapter introduces the statistical principles of MLA. This is done primarily through algebraic notation, and the equations are linked to graphs where appropriate to help with the interpretation.
Alastair H. Leyland   +1 more
openaire   +1 more source

Equations Defining Certain Graphs [PDF]

open access: yesMichigan Mathematical Journal, 2020
Several typos fixed and the section of general elements ...
Kim, Youngsu, Mukundan, Vivek
openaire   +3 more sources

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