Global Solvability and Simultaneously Approximable Vectors

Author: Petronilho G.

Source: Journal of Differential Equations, Volume 184, Number 1, September 2002 , pp. 48-61(14)

Publisher: Academic Press

Abstract:

We consider a class of sum of squares operators on a torus and we prove that global solvability is equivalent to an algebraic condition involving simultaneously approximable vectors. © 2002 Elsevier Science (USA).

Keywords: global solvability; Fourier transform; simultaneous approximability.

Language: English

Document Type: Research article

Affiliations: Departamento de Matemática, Rodovia Washington Luiz, Km 235, São Carlos, SP, 13565-905, Brasil

Publication date: 2002-09-01

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