منابع مشابه
RENORMINGS OF Lp(Lq) by
We investigate the best order of smoothness of L p (L q). We prove in particular that there exists a C ∞-smooth bump function on L p (L q) if and only if p and q are even integers and p is a multiple of q.
متن کاملOperator space embedding of Lq into Lp
The idea of replacing functions by linear operators, the process of quantization, goes back to the foundations of quantum mechanics and has a great impact in mathematics. This applies for instance to representation theory, operator algebra, noncommutative geometry, quantum and free probability or operator space theory. The quantization of measure theory leads to the theory of Lp spaces defined ...
متن کاملOPERATOR-VALUED Lq → Lp FOURIER MULTIPLIERS
Fourier multiplier theorems provides one of the most important tools in the study of partial differential equations and embedding theorems. They are very often used to establish maximal regularity of elliptic and parabolic differential operator equations. Operator–valued multiplier theorems in Banach–valued function spaces have been discussed extensively in [1, 2, 3, 5, 7, 8, 9, 10, 11, 12 ]. B...
متن کاملWeighted Lp − Lq estimates of Stokes semigroup in exterior domains
We consider the Navier-Stokes equations in exterior domains and in the weighted L space. For this purpose, we consider the L − L estimates of Stokes semigroup with weight 〈x〉 type. Our proof is based on the cut-off technique with local energy decay estimate proved by Dan, Kobayashi and Shibata [1] and the weighted L − L estimates of Stokes semigroup in the whole space proved by Kobayashi and Ku...
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ژورنال
عنوان ژورنال: Bulletin of the American Mathematical Society
سال: 1985
ISSN: 0273-0979
DOI: 10.1090/s0273-0979-1985-15350-9