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Autor Ruiz Sancho, Jesús María |
Documentos disponibles escritos por este autor (73)
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In this note, the author proves, in the context of excellent rings, two results on chains of specializations in the real spectrum and some corollaries about real dimension. The first result (Theorem I) is the following: let ?0 be a point of Spec[...]![]()
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En este trabajo obtemos algunos resultados básicos sobre determinación finita y clasificación de singularidades para series con coeficientes en un cuerpo de características cero. Estos resultados son clásicos para coeficientes complejos, y reale[...]![]()
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The paper contains a technical but useful theorem about stratification of semianalytic sets![]()
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Este texto está dedicado a la geometría analítica elemental del plano y del espacio, insistiendo en la distinción natural entre las nociones vectoriales, las afines y las euclídes. Tras recordar brevemente las operaciones básicas de escalares y [...]![]()
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Rodríguez Sanjurjo, José Manuel ; Ruiz Sancho, Jesús María | Addison-Wesley Iberoamericana España | 1998Este libro presenta, de modo directo y accesible, las nociones y los resultados básicos de la geometría proyectiva: variedades y aplicaciones proyectivas, razón doble, homografías y cuádricas. La exposición teórica se completa con notas históric[...]![]()
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This is a survey on the history of and the solutions to the basic global problems on Nash functions, which have been only recently solved, namely: separation, extension, global equations, Artin-Mazur description and idempotency, also noetheriann[...]![]()
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In this note, the author gives a proof of the following going-down theorem: If ?:A?B is a regular map between Noetherian rings with A excellent, any chain of specialization in Spec r A comes from a chain of the same length in Spec r B with corr[...]![]()
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Let X be a real affine algebraic set and S a semialgebraic set. Many important results are known about the basicness of S: mainly, if S is basic open, S can be defined by s strict inequalities, where s is bounded by the dimension of X. It is als[...]![]()
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The literature devoted to degree theory and its applications is abundant, but the richness of the topics is such that it is not surprising to see regularly the publication of new books in this area. The emphasis of the present one is on Brouwer[...]![]()
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Castrillón López, Marco ; Martín Peinador, Elena ; Rodríguez Sanjurjo, José Manuel ; Ruiz Sancho, Jesús María | Departamento de Geometría y Topología | 2015-09This volume contains the contributions presented by several colleagues as a tribute to the mathematical and human qualities of José María Montesinos Amilibia on the occasion of his seventieth birthday. The editors would like to express their tha[...]![]()
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