Interpolation and extrapolation of smooth functions by linear operators.
Charles Fefferman (2005)
Revista Matemática Iberoamericana
Similarity:
Charles Fefferman (2005)
Revista Matemática Iberoamericana
Similarity:
Alexander Nagel, Elias M. Stein (2005)
Revista Matemática Iberoamericana
Similarity:
We wish to acknowledge and correct an error in a proof in our paper , which appeared in Revista Matemática Iberoamericana, volume 20, number 2, 2004, pages 531-561.
Themis Mitsis (2005)
Revista Matemática Iberoamericana
Similarity:
In the paper , appeared in Rev. Mat. Iberoamericana 20 (2004), 381-393, the author claimed that an (n,2)-set must have full Hausdorff dimension. However, as pointed out by Terence Tao and John Bueti, the proof contains an error.
Camil Muscalu, Jill Pipher, Terence Tao, Christoph Thiele (2006)
Revista Matemática Iberoamericana
Similarity:
We prove that classical Coifman-Meyer theorem holds on any polidisc T or arbitrary dimension d ≥ 1.
M. Fabian, P. Hájek, V. Montesinos, V. Zizler (2005)
Revista Matemática Iberoamericana
Similarity:
A quantitative version of Krein's Theorem on convex hulls of weak compact sets is proved. Some applications to weakly compactly generated Banach spaces are given.
Karlheinz Gröchenig (2006)
Revista Matemática Iberoamericana
Similarity:
We investigate the properties an exotic symbol class of pseudodifferential operators, Sjöstrand's class, with methods of time-frequency analysis (phase space analysis). Compared to the classical treatment, the time-frequency approach leads to striklingly simple proofs of Sjöstrand's fundamental results and to far-reaching generalizations.
S. Junca (2008)
Revista Matemática Iberoamericana
Similarity:
María J. Carro, Joaquim Martín (2004)
Revista Matemática Iberoamericana
Similarity:
Sönke Blunck, Peer Christian Kunstmann (2003)
Revista Matemática Iberoamericana
Similarity:
Yahya Ould Hamidoune, Alain Plagne (2005)
Revista Matemática Iberoamericana
Similarity:
Gérard Bourdaud, Massimo Lanza de Cristoforis, Winfried Sickel (2006)
Revista Matemática Iberoamericana
Similarity:
We characterize the set of all functions f of R to itself such that the associated superposition operator T: g → f º g maps the class BV (R) into itself. Here BV (R), 1 ≤ p < ∞, denotes the set of primitives of functions of bounded p-variation, endowed with a suitable norm. It turns out that such an operator is always bounded and sublinear. Also, consequences for the boundedness of superposition operators defined on Besov spaces B ...