The aim of this paper is to study the model problem:{partial derivative u/partial derivative t - Delta(p)u = f in Qu = 0 on partial derivative Omega x (0, T)u(x, 0) = u(0) in Omega.The main purpose of this work is to prove the existence and a limiting regularity result for the solution u of the above problem having right-hand side f is an element of L-beta (0, T; LLog(alpha) L(Omega)). In particular, we will consider the cases:(i) If p >= 2, beta = 1, and alpha > N-1/N, then u is an element of Lp-1(0, T, W-0(1,(q) over bar) (Omega)) ((q) over bar = N(p-1)/N-1).(ii) If 2 - 1/N < p < N, beta = N', and alpha = N-1/N, then u is an element of L (q) over bar (0, T, W-0(1,(q) over bar) (Omega)).(iii) If p = N, beta = N', and alpha = N-1/N, then u is an element of L-N(0, T, W-0(1,N) (Omega)).(iv) If p >= 2, f is an element of L-1(0, T; L(m)Log(alpha) L(Omega)), and alpha > N-m/N, then u is an element of Lp-1(0, T, W-0(1,m*(p-1)) (Omega)).

A limiting regularity result for some parabolic problems with data in Zygmund spaces

Di Fazio, G.
Membro del Collaboration Group
;
2022-01-01

Abstract

The aim of this paper is to study the model problem:{partial derivative u/partial derivative t - Delta(p)u = f in Qu = 0 on partial derivative Omega x (0, T)u(x, 0) = u(0) in Omega.The main purpose of this work is to prove the existence and a limiting regularity result for the solution u of the above problem having right-hand side f is an element of L-beta (0, T; LLog(alpha) L(Omega)). In particular, we will consider the cases:(i) If p >= 2, beta = 1, and alpha > N-1/N, then u is an element of Lp-1(0, T, W-0(1,(q) over bar) (Omega)) ((q) over bar = N(p-1)/N-1).(ii) If 2 - 1/N < p < N, beta = N', and alpha = N-1/N, then u is an element of L (q) over bar (0, T, W-0(1,(q) over bar) (Omega)).(iii) If p = N, beta = N', and alpha = N-1/N, then u is an element of L-N(0, T, W-0(1,N) (Omega)).(iv) If p >= 2, f is an element of L-1(0, T; L(m)Log(alpha) L(Omega)), and alpha > N-m/N, then u is an element of Lp-1(0, T, W-0(1,m*(p-1)) (Omega)).
2022
Orlicz space
parabolic problem
rearrangement
Sobolev spaces
truncations
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/588070
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
social impact