Complexity of 4-manifolds.
Costantino, Francesco (2006)
Experimental Mathematics
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Costantino, Francesco (2006)
Experimental Mathematics
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Lutz, Frank H. (2008)
Beiträge zur Algebra und Geometrie
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Frigerio, Roberto, Martelli, Bruno, Petronio, Carlo (2004)
Experimental Mathematics
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Fominykh, E.A., Ovchinnikov, M.A. (2005)
Sibirskie Ehlektronnye Matematicheskie Izvestiya [electronic only]
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Kühnel, Wolfgang (2004)
Documenta Mathematica
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Datta, Basudeb, Nilakantan, Nandini (2008)
International Journal of Mathematics and Mathematical Sciences
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Freedman, Michael H., Kitaev, Alexei, Nayak, Chetan, Slingerland, Johannes K., Walker, Kevin, Wang, Zhenghan (2005)
Geometry & Topology
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Alberto Cavicchioli, Fulvia Spaggiari (1993)
Commentationes Mathematicae Universitatis Carolinae
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We classify the genus one compact (PL) 5-manifolds and prove some results about closed 5-manifolds with free fundamental group. In particular, let be a closed connected orientable smooth -manifold with free fundamental group. Then we prove that the number of distinct smooth -manifolds homotopy equivalent to equals the -nd Betti number (mod ) of .
Hanspeter Fischer, David G. Wright (2003)
Fundamenta Mathematicae
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Hass, Rubinstein, and Scott showed that every closed aspherical (irreducible) 3-manifold whose fundamental group contains the fundamental group of a closed aspherical surface, is covered by Euclidean space. This theorem does not generalize to higher dimensions. However, we provide geometric tools with which variations of this theorem can be proved in all dimensions.
Ivanšić, Dubravko, Ratcliffe, John G., Tschantz, Steven T. (2005)
Algebraic & Geometric Topology
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Luigi Grasselli (1990)
Revista Matemática de la Universidad Complutense de Madrid
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We describe a combinatorial algorithm for constructing all orientable 3-manifolds with a given standard bidimensional spine by making use of the idea of bijoin (Bandieri and Gagliardi (1982), Graselli (1985)) over a suitable pseudosimplicial triangulation of the spine.