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A Note on Coincidence Degree Theory [PDF]

open access: yesAbstract and Applied Analysis, 2012
The background of definition of coincidence degree is explained, and some of its basic properties are given.
Ali Sırma, Sebaheddin Ṣevgin
doaj   +6 more sources

Fixed point property and degree of coincidence [PDF]

open access: yesApplied General Topology
We introduce the concept of degree of coincidence to measure the divergence from the fixed point property in case a space does not have the FPP.
W. Kulpa, A. Szymanski, M. Turzanski
doaj   +5 more sources

Coincidence degree and fractional boundary value problems with impulses [PDF]

open access: yesComputers and Mathematics With Applications, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chen, Fulai
exaly   +3 more sources

Periodic solution of a bioeconomic fishery model by coincidence degree theory [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
In this article we use coincidence degree theory to study the existence of a positive periodic solutions to the following bioeconomic model in fishery dynamics \begin{equation*}\label{eq1.3} \begin{cases} \frac{dn}{dt} = n \left(r(t) \left(1-\frac{n ...
Satyam Srivastava   +2 more
doaj   +4 more sources

Application of Mawhin′s Coincidence Degree and Matrix Spectral Theory to a Delayed System [PDF]

open access: yesAbstract and Applied Analysis, 2012
This paper gives an application of Mawhin’s coincidence degree and matrix spectral theory to a predator‐prey model with M‐predators and N‐preys. The method is different from that used in the previous work. Some new sufficient conditions are obtained for the existence and global asymptotic stability of the periodic solution.
Xia, Yong-Hui   +3 more
core   +10 more sources

Effect of Fracture Coincidence on Mechanical Properties and Damage Evolution of Sandstone [PDF]

open access: yesMeikuang Anquan, 2020
To study the effect of fracture coincidence on mechanical properties and damage evolution of fractured sandstone, five kinds of sandstone specimens with different crack distributions were simulated by RFPA2D software under uniaxial compression test. The
XUE Shipeng
doaj   +2 more sources

Four positive periodic solutions of a discrete time Lotka-Volterra competitive system with harvesting terms [PDF]

open access: yesOpuscula Mathematica, 2011
In this paper, by using Mawhin's continuation theorem of coincidence degree theory, we establish the existence of at least four positive periodic solutions for a discrete time Lotka-Volterra competitive system with harvesting terms.
Xinggui Liu, Yaping Ren, Yongkun Li
doaj   +1 more source

On some higher order boundary value problems at resonance with integral boundary conditions

open access: yesArab Journal of Mathematical Sciences, 2018
This paper investigates the existence of solutions for higher-order multipoint boundary value problems at resonance. We obtain existence results by using coincidence degree arguments.
Samuel Azubuike Iyase   +1 more
doaj   +1 more source

Periodic solutions to a $p$-Laplacian neutral Duffing equation with variable parameter

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
We study a type of $p$-Laplacian neutral Duffing functional differential equation with variable parameter to establish new results on the existence of $T$-periodic solutions.
Bo Du, Bo Sun
doaj   +1 more source

An algebraic decomposition of the recursively enumerable degrees and the coincidence of several degree classes with the promptly simple degrees [PDF]

open access: yesTransactions of the American Mathematical Society, 1984
We specify a definable decomposition of the upper semilattice of recursively enumerable (r.e.) degrees R \mathbf {R}
Ambos-Spies, Klaus   +3 more
openaire   +1 more source

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