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American Mathematical Society |
Documentos disponibles de esta editorial (118)
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Artal Bartolo, Enrique ; Cassou-Noguès, Pierrette ; Luengo Velasco, Ignacio ; Melle Hernández, Alejandro | American Mathematical Society | 2008In this article we show that for a given, reduced or non reduced, germ of a complex plane curve, there exists a local system of coordinates such that its log-canonical threshold at the singularity can be explicitly computed from the intersection[...]![]()
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The minimum genus problem consists on determining the minimum algebraic genus of a surface on which a given group G acts. For cyclic groups G this problem on bordered Klein surfaces was solved in 1989. The next step is to fix the number of bound[...]![]()
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Llavona, José G. ; Linares Briones, Pablo ; Ibort Latre, Luis Alberto | American Mathematical Society | 2010A multilinear generalization of the trigonometric problem of moments is presented and discussed. The moments c(k), k is an element of Z(n) of a regular Borel polymeasure gamma on T(n) are characterized by means of a norm parallel to . parallel t[...]![]()
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Acquistapace, Francesca ; Broglia, Fabrizio ; Fernando Galván, José Francisco | American Mathematical Society | 2016In this work we prove the real Nullstellensatz for the ring O(X) of analytic functions on a C-analytic set X ? Rn in terms of the saturation of ?ojasiewicz’s radical in O(X): The ideal I(?(a)) of the zero-set ?(a) of an ideal a of O(X) coincides[...]![]()
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We improve the known results on eigenvalue distributions of weakly singular integral operators having (power) order of the singularity equal to half of the dimension of the underlying domain. Moreover we show that our results are the best possible.![]()
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In the same vein as the classical Stone–?Cech compactification, we prove in this work that the maximal spectra of the rings of semialgebraic and bounded semialgebraic functions on a semialgebraic set M ? Rn, which are homeomorphic topological sp[...]![]()
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Sánchez Gabites, Jaime Jorge ; Rodríguez Sanjurjo, José Manuel | American Mathematical Society | 2007Suppose phi : M x R -> M is a continuous flow on a locally compact metrizable space M and K is an ( asymptotically stable) attractor. Let D =partial derivative A( K) be the boundary of the basin of attraction of K. In the present paper it will [...]![]()
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Let K and S be compact Hausdorff spaces and 8 a continuous function from K onto S. Then for any Banach space E the map / -» / ° 9 isometrically embeds C(S, £) as a closed subspace of C(K, E). In this note we prove that when E' has the Radon-Niko[...]![]()
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Given a Banach space X and an integer n, the existence of an n-homogeneous polynomial which is not uniformly continuous with respect to the polynomial topology on B-X is investigated. We provide a complete characterization for some classical Ban[...]![]()
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A mapping between Banach spaces is said to be polynomially continuous if its restriction to any bounded set is uniformly continuous for the weak polynomial topology. A Banach space X has property(RP) if given two bounded sequences (u(j)), (v(j))[...]![]()
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In this note we use the space ? in order to prove that a result concerning movability and mutational retractions cannot be transferred from the compact to the arbitrary metrizable case![]()
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We characterize the double Veronese embedding of P-n as the only variety that, under certain general conditions, can be isomorphically projected from the Grassmannian of lines in P2n+1 to the Grassmannian of lines in Pn+1.![]()
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The authors classify all topological types of degenerate central fibers appearing in holomorphic families of closed Riemann surfaces of genus g?2 over the unit disc. A degenerating family of genus g is a triple (M,D,?) consisting of a 2-dime[...]![]()
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Melle Hernández, Alejandro ; Artal Bartolo, Enrique ; Cassou-Noguès, Pierrette ; Luengo Velasco, Ignacio | American Mathematical Society | 2005-11The main objective of this paper is to prove the monodromy conjecture for the local Igusa zeta function of a quasi-ordinary polynomial of arbitrary dimension defined over a number field. In order to do it, we compute the local Denef-Loeser motiv[...]![]()
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Castrillón López, Marco ; Ratiu, Tudor S. ; Shkoller, Steve | American Mathematical Society | 1999-11-01In Lagrangian mechanics the simplest example of reduction is the Euler-Poincaré reduction. In this case, the configuration space is a Lie group G and the Lagrangian function L:TG?R is invariant under the natural action of the group on TG by righ[...]