Convergents and irrationality measures of logarithms.
T. Rivoal (2007)
Revista Matemática Iberoamericana
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T. Rivoal (2007)
Revista Matemática Iberoamericana
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O. Guédon, S. Mendelson, A. Pajor, N. Tomczak-Jaegermann (2008)
Revista Matemática Iberoamericana
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Julien Barral (2003)
Revista Matemática Iberoamericana
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Herbert Koch, Winfried Sickel (2002)
Revista Matemática Iberoamericana
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Joaquim Bruna, Alexander Olevskii, Alexander Ulanovskii (2006)
Revista Matemática Iberoamericana
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We characterize, in terms of the Beurling-Malliavin density, the discrete spectra Λ ⊂ R for which a generator exists, that is a function φ ∈ L(R) such that its Λ translates φ(x - λ), λ ∈ Λ, span L(R). It is shown that these spectra coincide with the uniqueness sets for certain analytic clases. We also present examples of discrete spectra Λ ∈ R which do not admit a single generator while they admit a pair of generators.
C.T.C. Wall (2003)
Revista Matemática Iberoamericana
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Philippe Laurençot, Stéphane Mischler (2002)
Revista Matemática Iberoamericana
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Camil Muscalu, Jill Pipher, Terence Tao, Christoph Thiele (2006)
Revista Matemática Iberoamericana
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We prove that classical Coifman-Meyer theorem holds on any polidisc T or arbitrary dimension d ≥ 1.
Shinya Moritoh, Tomomi Yamada (2004)
Revista Matemática Iberoamericana
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Yahya Ould Hamidoune, Alain Plagne (2005)
Revista Matemática Iberoamericana
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