Nash type inequalities for fractional powers of non-negative self-adjoint operators

被引:34
|
作者
Bendikov, Alexander
Maheux, Patrick
机构
[1] Univ Wroclaw, Inst Math, PL-50384 Wroclaw, Poland
[2] Univ Orleans, Dept Math, MAPMO Federat Denis Poisson, F-45067 Orleans 2, France
关键词
Nash inequality; fractional powers of operators; semigroup of operators; logarithmic Sobolev inequality; ultracontractivity property; Dirichlet form;
D O I
10.1090/S0002-9947-07-04020-2
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Assuming that a Nash type inequality is satisfied by a non-negative self-adjoint operator A, we prove a Nash type inequality for the fractional powers A(alpha) of A. Under some assumptions, we give ultracontractivity bounds for the semigroup (T-t,T-alpha) generated by -A(alpha).
引用
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页码:3085 / 3097
页数:13
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