On the density of continuous functions in variable exponent Sobolev space.
P. A. Hästo (2007)
Revista Matemática Iberoamericana
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P. A. Hästo (2007)
Revista Matemática Iberoamericana
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Zoltán Buczolich (2005)
Revista Matemática Iberoamericana
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In this paper we give a complete answer to the famous gradient problem of C. E. Weil. On an open set G ⊂ R we construct a differentiable function f: G → R for which there exists an open set Ω ⊂ R such that ∇f(p) ∈ Ω for a p ∈ G but ∇f(q) ∉ Ω for almost every q ∈ G. This shows that the Denjoy-Clarkson property does not hold in higher dimensions.
Giovanna Citti, Giuseppe Tomassini (2004)
Revista Matemática Iberoamericana
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P. Hajlasz, P. Koskela, H. Tuominen (2008)
Revista Matemática Iberoamericana
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Themis Mitsis (2004)
Revista Matemática Iberoamericana
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We prove that a set containing translates of every 2-plane must have full Hausdorff dimension.
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.
P. Batchourine, C. Fefferman (2007)
Revista Matemática Iberoamericana
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Yahya Ould Hamidoune, Alain Plagne (2005)
Revista Matemática Iberoamericana
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Shinya Moritoh, Tomomi Yamada (2004)
Revista Matemática Iberoamericana
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Lihe Wang (2002)
Revista Matemática Iberoamericana
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