Información del autor
Autor Etayo Gordejuela, J. Javier |
Documentos disponibles escritos por este autor (47)
Añadir el resultado a su cesta Hacer una sugerencia Refinar búsqueda
texto impreso
A problem of special interest in the study of automorphism groups of surfaces are the bounds of the orders of the groups as a function of the genus of the surface. May has proved that a Klein surface with boundary of algebraic genus p has at mos[...]texto impreso
Alonso García, María Emilia ; Etayo Gordejuela, J. Javier ; Gamboa, J. M. ; Ruiz Sancho, Jesús María | Real Sociedad Matemática Española;Consejo Superior de Investigaciones Científicas. Instituto "Jorge Juan" de Matemáticas | 1980Dado un espacio T3? (X,T), es posible obtener una compactificación T2 del mismo, mediante ultrafiltros asociados a ciertas bases distinguidas de cerrados de (X,T) (Frink [4]). Se plantea así el problema siguiente: ¿Puede obtenerse toda compactif[...]texto impreso
El objetivo de esta memoria es el estudio de los grupos de automorfismos de las superficies de Klein, el concepto de superficie de Klein surge como extensión del de superficie de Riemann que resulta ser un caso particular. La técnica que hemos u[...]texto impreso
texto impreso
Every finite group acts as a group of automorphisms of some compact bordered Klein surface of algebraic genus g?2 . The same group G may act on different genera and so it is natural to look for the minimum genus on which G acts. This is the mi[...]texto impreso
Índice abreviado: 1. Generalidades. Teorema de Lagrange 2. Subgrupos normales. Homomorfismos. Teorema de estructura de los grupos abelianos finitos 3. Grupo de automorfismos. Acción de un grupo sobre un conjunto 4. El teorema de Sylow 5. Grupos [...]texto impreso
Every finite group G may act as an automorphism group of Klein surfaces either bordered or unbordered either orientable or non-orientable. For each group the minimum genus receives different names according to the topological features of the sur[...]texto impreso
An important problem in the study of Riemann and Klein surfaces is determining their full automorphism groups. Up to now only very partial results are known, concerning surfaces of low genus or families of surfaces with special properties. This [...]texto impreso
Bujalance, E. ; Etayo Gordejuela, J. Javier ; Gamboa, J. M. ; Gromadzki, G. | Elsevier Science | 2011A compact Riemann surface X of genus g ? 2 which can be realized as a q-fold, normal covering of a compact Riemann surface of genus p is said to be (q, p)-gonal. In particular the notion of (2, p)-gonality coincides with p-hyperellipticity and [...]texto impreso
Every finite group G acts as an automorphism group of several bordered compact Klein surfaces. The minimal genus of these surfaces is called the real genus and denoted by ?(G). The systematical study was begun by C.L. May and continued by him in[...]texto impreso
A Klein surface with boundary of algebraic genus $\mathfrak{p}\geq 2$, has at most $12(\mathfrak{p}-1)$ automorphisms. The groups attaining this upper bound are called $M^{\ast}$-groups, and the corresponding surfaces are said to have maximal sy[...]texto impreso
Every finite group acts as an automorphism group of several bordered compact Klein surfaces. The minimal genus of these surfaces is called the real genus of and it is denoted The systematical study of this parameter was begun by May and continue[...]texto impreso
Etayo Gordejuela, J. Javier ; Gromadzki, G. ; Martínez García, Ernesto | University of Houston | 2012Every finite group G acts as an automorphism group of some non-orientable Klein surfaces without boundary. The minimal genus of these surfaces is called the symmetric crosscap number and denoted by ?˜(G). The systematic study about the symmetric[...]texto impreso
Every finite group G acts as an automorphism group of some non-orientable Klein surfaces without boundary. The minimal genus of these surfaces is called the symmetric cross-cap number and denoted by ˜?(G). This number is related to other paramet[...]texto impreso
Every finite group G acts as an automorphism group of some non-orientable Klein surfaces without boundary. The minimal genus of these surfaces is called the symmetric crosscap number and denoted by (sigma) over tilde (G). It is known that 3 cann[...]