Results 51 to 60 of about 1,287 (117)

Parabolic equation in time and space dependent anisotropic Musielak-Orlicz spaces in absence of Lavrentiev's phenomenon

open access: yes, 2018
We study a general nonlinear parabolic equation on a Lipschitz bounded domain in $\mathbb{R}^N$, \begin{equation*} \left\{\begin{array}{l l} \partial_t u-\mathrm{div} A(t,x,\nabla u)= f(t,x)&\text{in}\ \ \Omega_T,\\ u(t,x)=0 &\ \mathrm{ on} \ (0,T)\times\
Chlebicka, Iwona   +2 more
core   +1 more source

Representation on additive functionals of Musielak-Orlicz space of vector-valued functions [PDF]

open access: yesKodai Mathematical Journal, 1987
Let (T,\(\Sigma\),\(\mu)\) be a space with a complete, and \(\sigma\)-finite measure and X be a real separable Banach space. Moreover, let \(E_ M\) be a subspace of finite elements of non-solid Musielak-Orlicz space \(L_ M\) of functions with values in the space X.
openaire   +3 more sources

Multiplicity results for logarithmic double phase problems via Morse theory

open access: yesBulletin of the London Mathematical Society, Volume 57, Issue 12, Page 4178-4201, December 2025.
Abstract In this paper, we study elliptic equations of the form −divL(u)=f(x,u)inΩ,u=0on∂Ω,$$\begin{align*} -\operatorname{div}\mathcal {L}(u)=f(x,u)\quad \text{in }\Omega, \quad u=0 \quad \text{on } \partial \Omega, \end{align*}$$where divL$\operatorname{div}\mathcal {L}$ is the logarithmic double phase operator given by div|∇u|p−2∇u+μ(x)|∇u|q(e+|∇u ...
Vicenţiu D. Rădulescu   +2 more
wiley   +1 more source

Nonlinear parabolic problems in Musielak--Orlicz spaces [PDF]

open access: yes, 2013
Our studies are directed to the existence of weak solutions to a parabolic problem containing a multi-valued term. The problem is formulated in the language of maximal monotone graphs.
Świerczewska-Gwiazda, Agnieszka
core  

Well-posedness of parabolic equations in the non-reflexive and anisotropic Musielak-Orlicz spaces in the class of renormalized solutions

open access: yes, 2018
We prove existence and uniqueness of renormalized solutions to general nonlinear parabolic equation in Musielak-Orlicz space avoiding growth restrictions. Namely, we consider \[\partial_t u-\mathrm{div} A(x,\nabla u)= f\in L^1(\Omega_T),\] on a Lipschitz
Chlebicka, Iwona   +2 more
core   +2 more sources

On approximation by rational functions in Musielak–Orlicz spaces

open access: yesJournal of Approximation Theory
The authors extend the results from [\textit{W. M. Kozlowski}, J. Approx. Theory 264, Article ID 105535, 14 p. (2021; Zbl 1462.41015); Appl. Set-Valued Anal. Optim. 4, No. 3, 337--348 (2022; \url{doi:10.23952/asvao.4.2022.3.07})] to the problem of best approximation by rational functions in a larger class of Musielak-Orlicz spaces of real-valued ...
Kozlowski WM, Vinti G
openaire   +3 more sources

Stochastic integration with respect to cylindrical Lévy processes in Hilbert spaces

open access: yesJournal of the London Mathematical Society, Volume 112, Issue 3, September 2025.
Abstract In this work, we present a comprehensive theory of stochastic integration with respect to arbitrary cylindrical Lévy processes in Hilbert spaces. As cylindrical Lévy processes do not enjoy a semimartingale decomposition, our approach relies on an alternative approach to stochastic integration by decoupled tangent sequences.
Gergely Bodó, Markus Riedle
wiley   +1 more source

New Classes of Generalized Seminormed Difference Sequence Spaces

open access: yesAbstract and Applied Analysis, 2014
The purpose of this paper is to introduce new classes of generalized seminormed difference sequence spaces defined by a Musielak-Orlicz function. We also study some topological properties and prove some inclusion relations between resulting sequence ...
M. Mursaleen   +2 more
doaj   +1 more source

Intrinsic square function characterizations of Musielak-Orlicz Hardy spaces

open access: yesTransactions of the American Mathematical Society, 2014
Let φ : R n × [ 0 , ∞ ) → [ 0 , ∞ ) \varphi : \mathbb R^n\times [0,\infty )\to [0,\infty ) be such that φ ( x , ⋅ ) \varphi (x,\cdot ...
Liang, Yiyu, Yang, Dachun
openaire   +2 more sources

Minimizers of abstract generalized Orlicz‐bounded variation energy

open access: yesMathematical Methods in the Applied Sciences, Volume 47, Issue 15, Page 11795-11809, October 2024.
A way to measure the lower growth rate of φ:Ω×[0,∞)→[0,∞)$$ \varphi :\Omega \times \left[0,\infty \right)\to \left[0,\infty \right) $$ is to require t↦φ(x,t)t−r$$ t\mapsto \varphi \left(x,t\right){t}^{-r} $$ to be increasing in (0,∞)$$ \left(0,\infty \right) $$.
Michela Eleuteri   +2 more
wiley   +1 more source

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