Parameter–Elliptic Fourier Multipliers Systems and Generation of Analytic and C∞ Semigroups

Autor:	Bienvenido Barraza Martínez, Jonathan González Ospino, Rogelio Grau Acuña, Jairo Hernández Monzón
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	C∞-semigroups analytic semigroups Fourier multipliers Λ-ellipticity Mathematics QA1-939
Zdroj:	Mathematics, Vol 10, Iss 5, p 751 (2022)
Druh dokumentu:	article
ISSN:	2227-7390
DOI:	10.3390/math10050751
Popis:	We consider Fourier multiplier systems on Rn with components belonging to the standard Hörmander class S1,0mRn, but with limited regularity. Using a notion of parameter-ellipticity with respect to a subsector Λ⊂C (introduced by Denk, Saal, and Seiler) we show the generation of both C∞ semigroups and analytic semigroups (in a particular case) on the Sobolev spaces WpkRn,Cq with k∈N0, 1≤p<∞ and q∈N. For the proofs, we modify and improve a crucial estimate from Denk, Saal and Seiler, on the inverse matrix of the symbol (see Lemma 2). As examples, we apply the theory to solve the heat equation, a linear thermoelastic plate equation, a structurally damped plate equation, and a generalized plate equation, all in the whole space, in the frame of Sobolev spaces.
Databáze:	Directory of Open Access Journals
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