Results 1 to 10 of about 140,110 (288)

Explicit bounds of unknown function of some new weakly singular retarded integral inequalities for discontinuous functions and their applications [PDF]

open access: yesJournal of Inequalities and Applications, 2017
The purpose of the present paper is to establish some new retarded weakly singular integral inequalities of Gronwall-Bellman type for discontinuous functions, which generalize some known weakly singular and impulsive integral inequalities.
Zizun Li, Wu-Sheng Wang
doaj   +2 more sources

Product integration for weakly singular integro-differential equations

open access: yesMathematical Modelling and Analysis, 2011
On the basis of product integration techniques a discrete version of a piecewise polynomial collocation method for the numerical solution of initial or boundary value problems of linear Fredholm integro-differential equations with weakly singular kernels
Arvet Pedas, Enn Tamme
doaj   +4 more sources

Collocation approximations for weakly singular Volterra integro‐differential equations

open access: yesMathematical Modelling and Analysis, 2003
A piecewise polynomial collocation method for solving linear weakly singular integro‐differential equations of Volterra type is constructed. The attainable order of convergence of collocation approximations on arbitrary and quasi‐uniform grids is studied
I. Parts, A. Pedas
doaj   +5 more sources

Weakly Canceling Operators and Singular Integrals [PDF]

open access: yesProceedings of the Steklov Institute of Mathematics, 2021
12 ...
openaire   +2 more sources

On Weakly Regular Rings and SSF-rings [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2006
In this work we consider weakly regular rings whose simple singular right R-Modules are flat. We also consider the condition (*): R satisfies L(a)Ír(a) for any aÎR. We prove that if R satisfies(*) and whose simple singular right R-module are flat, then Z
Raida Mahmood
doaj   +1 more source

On the convergence rate of collocation methods for Volterra integral equations with weakly singular oscillatory trigonometric kernels

open access: yesResults in Applied Mathematics, 2023
This paper presents efficient collocation methods for linear Volterra integral equations with weakly singular highly oscillatory kernels. The numerical steepest descent method and generalized Gauss–Laguerre rule are utilized to calculate the weakly ...
Qinghua Wu, Mengjun Sun
doaj   +1 more source

Characterizations of Weakly Approximately Primary Submodules in Some Types of Modules

open access: yesTikrit Journal of Pure Science, 2021
Our aim in this note is to introduce several characterizations of weakly approximately primary submodules in class of multiplication modules. Furthermore, we characterized weakly approximately primary submodules by theirs resudule in the class of ...
Khaled Y. Jhad, Bothaynah N. Shahab
doaj   +1 more source

Weakly-exceptional quotient singularities [PDF]

open access: yesOpen Mathematics, 2012
Abstract A singularity is said to be weakly-exceptional if it has a unique purely log terminal blow-up. In dimension 2, V. Shokurov proved that weakly-exceptional quotient singularities are exactly those of types D n, E 6, E 7, E 8. This paper
openaire   +4 more sources

On Almost Weakly np – injective Rings [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2018
The ring R is called right almost weakly np –injective, if for any , there exists a positive integer n and a left ideal  of R such that . In this paper, we give some characterization and properties of almost weakly np – injective rings.
Raida Mahmood, Amaar Ghaze
doaj   +1 more source

Finite functorial semi-norms and representability [PDF]

open access: yes, 2015
Functorial semi-norms are semi-normed refinements of functors such as singular (co)homology. We investigate how different types of representability affect the (non-)triviality of finite functorial semi-norms on certain functors or classes. In particular,
Loeh, Clara
core   +2 more sources

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