On T x G, where T is a compact real-analytic manifold and G is a compact Lie group, we consider differential operators P which are invariant by left translations on G and are elliptic in T. Under a mild technical condition, we prove that global hypoellipticity of P implies its global analytic-hypoellipticity (actually Gevrey of any order s >= 1). We also study the connection between the latter property and the notion of global analytic (resp. Gevrey) solvability, but in a much more general setup.
机构:
Univ Sao Paulo, IME USP, Rua Matao 1010, BR-05590090 Sao Paulo, SP, BrazilUniv Sao Paulo, IME USP, Rua Matao 1010, BR-05590090 Sao Paulo, SP, Brazil
Chinni, G.
Cordaro, P. D.
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机构:
Univ Sao Paulo, IME USP, Rua Matao 1010, BR-05590090 Sao Paulo, SP, BrazilUniv Sao Paulo, IME USP, Rua Matao 1010, BR-05590090 Sao Paulo, SP, Brazil