On certain enumeration problems in two-dimensional topology

• Autores: Vladimir Turaev
• Localización: Mathematical research letters, ISSN 1073-2780, Vol. 16, Nº 2-3, 2009, págs. 515-529
• Idioma: inglés
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• Resumen

  • We announce a solution to several enumeration problems in topology of surfaces. This includes an enumeration of homotopy classes of sections of locally trivial fiber bundles over surfaces and a computation of non-abelian 1-cohomology of surfaces.