The functions that operate on of a discrete group
N.T. Varopoulos (1965)
Bulletin de la Société Mathématique de France
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N.T. Varopoulos (1965)
Bulletin de la Société Mathématique de France
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Robert Kaufman, Jang-Mei Wu (1995)
Revista Matemática Iberoamericana
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Doubling measures appear in relation to quasiconformal mappings of the unit disk of the complex plane onto itself. Each such map determines a homeomorphism of the unit circle on itself, and the problem arises, which mappings f can occur as boundary mappings?
Oscar Blasco (1991)
Publicacions Matemàtiques
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The duality between H1 and BMO, the space of functions of bounded mean oscillation (see [JN]), was first proved by C. Fefferman (see [F], [FS]) and then other proofs of it were obtained. In this paper we shall study such space in little more detail and we shall consider the H1-BMO duality for vector-valued functions in the more general setting of spaces of homogeneous type (see [CW]).
Emile Le Page, Marc Peigné (1999)
Revista Matemática Iberoamericana
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Let Gd be the semi-direct product of R*+ and Rd, d ≥ 1 and let us consider the product group Gd,N = Gd x RN, N ≥ 1. For a large class of probability measures μ on Gd,N, one prove that there exists ρ(μ) ∈ ]0,1] such that the sequence of finite measures {(n(N+3)/2 / ρ(μ)n) μ*n...
Gustavo Garrigós (1999)
Publicacions Matemàtiques
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In this paper, we study general properties of α-localized wavelets and multiresolution analyses, when 1/2 < α ≤ ∞. Related to the latter, we improve a well-known result of A. Cohen by showing that the correspondence m → φ' = Π m(2 ·), between low-pass filters in H(T) and Fourier transforms of α-localized scaling functions (in H(R)), is actually a homeomorphism of topological spaces. We also show that the space of such filters can be regarded as a connected infinite...
T. Figiel, T. Iwaniec, A. Pełczyński (1984)
Studia Mathematica
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Urszula Sztaba (1996)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
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J. H. B. Kemperman (1964)
Compositio Mathematica
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