نتایج جستجو برای: interpolation technique

تعداد نتایج: 634439  

2008
Birgit Jacob Jonathan R. Partington Sandra Pott

In this paper, norm estimates are obtained for the problem of minimal-norm tangential interpolation by vector-valued analytic functions in weighted H spaces, expressed in terms of the Carleson constants of related scalar measures. Applications are given to the notion of p-controllability properties of linear semigroup systems and controllability by functions in certain Sobolev spaces.

2010
LUBNA SHAHEEN

This paper discusses necessary and sufficient conditions on a monoid S, such that a class D of left S-acts is first order axiomatisable. Such questions have previousely been considered by Bulman-Fleming, Gould, Stepanova and others. Let C be a class of embeddings of right S-acts. A left S-act B is C-flat if tensoring with any B ∈ D preserves the embeddings in C. We find one or two (depending on...

2006
RONALD A. DEVORE ROBERT C. SHARPLEY

2010
J. L. WALSH J. P. EVANS

Let R be a finite region of the s-plane and let L2(R) denote the class of functions f(z) each analytic in R with //b|/(8)| 2dS< °°. Let the points ßi, ß2, ß3, • • • be given interior to R and let 0„(z) be that function of class L2(R) for which n(ßi) =n(ß2) = • • • =n(ßn-i) =0, n(ßn) = 1, and which minimizes ffs\ <¡>n(z) \ 2dS over the class L2(R). If the points ßi, ß2, ß3, ■ ■ ■ are...

2008
Nadine Badr NADINE BADR

We prove that W 1 p is a real interpolation space between W 1 p1 and W 1 p2 for p > q0 and 1 ≤ p1 < p < p2 ≤ ∞ on some classes of manifolds and general metric spaces, where q0 depends on our hypotheses.

2008
CONSTANTIN BACUTA JOSEPH E. PASCIAK

We consider the biharmonic Dirichlet problem on a polygonal domain. Regularity estimates in terms of Sobolev norms of fractional order are proved. The analysis is based on new interpolation results which generalizes Kellogg’s method for solving subspace interpolation problems. The Fourier transform and the construction of extension operators to Sobolev spaces on R are used in the proof of the i...

2005
Gerard R. Renardel de Lavalette

derivations, equational logic and interpolation (extended abstract) Gerard R. Renardel de Lavalette Department of Mathematics and Computing Science University of Groningen, the Netherlands Abstract. We define abstract derivations for equational logic and use them to prove the interpolation property. We define abstract derivations for equational logic and use them to prove the interpolation prop...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید