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Interpolation Theory In Banach Spaces
LebesgueBesov Spaces without Weights in Rn and R
LebesgueBesov Spaces with Welgths in Domains
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a e A0 Acad applications assume axan Banach spaces belongs Besov Besov spaces bounded domain coincides compact operators complex number consequence of Theorem considerations considered coretraction corresponding Deﬁnition denotes dense domain of definition eigenvalues elliptic differential operators embedding theorems equivalent norms estimate exists a number ﬁrst formula Fourier fractional powers function spaces Hence Hilbert spaces holds inequality infimum infinitesimal operator integral interpolation couple interpolation functor interpolation spaces interpolation theory isomorphic mapping J. L. LIONS Lemma Let A0 Let Q linear Maren Math method natural number nayx CCCP nuclear space obtains operator with pure PEETRE positive number proof of Theorem prove pure point spectrum real number regular elliptic Remark Rend replace resp restriction retraction right-hand side Schauder basis Section self-adjoint operator Sobolev spaces spaces A0 spaces with weights Subsection subspace TRIEBEL valid Whence it follows yields