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On the slope of fibred surfaces
| dc.contributor.author | Barja Yáñez, Miguel Ángel |
| dc.contributor.author | Zucconi, Franco |
| dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada I |
| dc.date.accessioned | 2007-04-30T09:36:13Z |
| dc.date.available | 2007-04-30T09:36:13Z |
| dc.date.created | 2000 |
| dc.date.issued | 2000 |
| dc.identifier.uri | http://hdl.handle.net/2117/815 |
| dc.description.abstract | We give an asymptotically sharp lower bound for the slope $\lambda (f)$ of a fibration $f:S\longrightarrow B$, where $S$ is a surface and $B$ is a curve, if there exists an involution on the general fibre $F$ of $f$. We also construct a new lower bound of $\lambda (f)$ depending increasingly on the irregularity of $S$; as an application of this new bound we have a criteria to control the existence of other fibrations on $S$. |
| dc.format.extent | 31 |
| dc.language.iso | eng |
| dc.rights | Attribution-NonCommercial-NoDerivs 2.5 Spain |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/2.5/es/ |
| dc.subject.lcsh | Geometry, Algebraic |
| dc.subject.lcsh | Surfaces |
| dc.subject.other | fibred surfaces |
| dc.title | On the slope of fibred surfaces |
| dc.type | Article |
| dc.subject.lemac | Fibrats (Matemàtica) |
| dc.subject.lemac | Superfícies |
| dc.subject.lemac | Varietats (Matemàtica) |
| dc.contributor.group | Universitat Politècnica de Catalunya. EGSA - Equacions Diferencials, Geometria, Sistemes Dinàmics i de Control, i Aplicacions |
| dc.subject.ams | Classificació AMS::14 Algebraic geometry::14D Families, fibrations |
| dc.subject.ams | Classificació AMS::14 Algebraic geometry::14J Surfaces and higher-dimensional varieties |
| dc.rights.access | Open Access |
| local.personalitzacitacio | true |
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