Results 51 to 60 of about 154 (124)

Validity and error analysis of calculating matrix exponential function and vector product

Nonlinear Engineering
In this study, an efficient calculation method of matrix exponential function and vector product is proposed to reduce the calculation error. This method is based on the flexible exponential integral scheme; using B-series theory and two-color tree ...
Tu Lihui, Hong Huanjie
doaj   +1 more source

Fractional-power approach for the study of elliptic second-order boundary-value problems with variable-operator coefficients in an unbounded domain

Electronic Journal of Differential Equations, 2020
In this article, we give new results on the study of elliptic complete abstract second order differential equations with variable operator coefficients under Dirichlet boundary conditions, and set in $\mathbb{R}_+$.
Fatiha Boutaous
doaj  

Differentiability, analyticity and optimal rates of decay for damped wave equations

Electronic Journal of Differential Equations, 2012
We give necessary and sufficient conditions on the damping term of a wave equation for the corresponding semigroup to be analytic. We characterize damped operators for which the corresponding semigroup is analytic, differentiable, or exponentially ...
Luci Harue Fatori, Maria Zegarra Garay, Jaime E. Munoz Rivera   +2 more
doaj  

Ergodic decompositions of Dirichlet forms under order isomorphisms. [PDF]

J Evol Equ, 2023
Schiavo LD, Wirth M.
europepmc   +1 more source

Dirichlet forms for general Wentzell boundary conditions, analytic semigroups, and cosine operator functions

Electronic Journal of Differential Equations, 2006
The aim of this paper is to study uniformly elliptic operators with general Wentzell boundary conditions in suitable $L^p$-spaces by using the approach of sesquilinear forms.
Delio Mugnolo, Silvia Romanelli
doaj  

Semigroup applications everywhere. [PDF]

Philos Trans A Math Phys Eng Sci, 2020
Nagel R, Rhandi A.
europepmc   +1 more source

Dynamical Systems: From Classical Mechanics and Astronomy to Modern Methods. [PDF]

J Indian Inst Sci, 2021
Rao ASRS, Krantz SG.
europepmc   +1 more source

Ornstein-Uhlenbeck semigroups in infinite dimension. [PDF]

Philos Trans A Math Phys Eng Sci, 2020
Lunardi A, Pallara D.
europepmc   +1 more source

Fundamental solutions for semidiscrete evolution equations via Banach algebras. [PDF]

Adv Differ Equ, 2021
González-Camus J, Lizama C, Miana PJ.
europepmc   +1 more source

Well-posedness and stability analysis of an epidemic model with infection age and spatial diffusion. [PDF]

J Math Biol, 2023
Walker C.
europepmc   +1 more source