Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Mulazzani, Michele"'
We give an upper bound for the Matveev complexity of the whole class of closed connected orientable prime graph manifolds that is sharp for all 14502 graph manifolds of the Recognizer catalogue (available at \texttt{http://matlas.math.csu.ru/?page=se
Externí odkaz:
http://arxiv.org/abs/1902.03881
Autor:
Grasselli, Luigi, Mulazzani, Michele
We introduce a representation via (n+1)-colored graphs of compact n-manifolds with (possibly empty) boundary, which appears to be very convenient for computer aided study and tabulation. Our construction is ageneralization to arbitrary dimension of t
Externí odkaz:
http://arxiv.org/abs/1811.08147
In this paper we deal with Seifert fibre spaces, which are compact 3-manifolds admitting a foliation by circles. We give a combinatorial description for these manifolds in all the possible cases: orientable, non-orientable, closed, with boundary. Mor
Externí odkaz:
http://arxiv.org/abs/1704.06721
Autor:
Cristofori, Paola, Mulazzani, Michele
Publikováno v:
RACSAM 110(2) (2016), 395-416
We introduce a representation of compact 3-manifolds without spherical boundary components via (regular) 4-colored graphs, which turns out to be very convenient for computer aided study and tabulation. Our construction is a direct generalization of t
Externí odkaz:
http://arxiv.org/abs/1304.5070
In this paper we study some aspects of knots and links in lens spaces. Namely, if we consider lens spaces as quotient of the unit ball $B^{3}$ with suitable identification of boundary points, then we can project the links on the equatorial disk of $B
Externí odkaz:
http://arxiv.org/abs/1209.6532
Publikováno v:
Topology and its Applications 159 (2012) 3042-3048
The idea of computing Matveev complexity by using Heegaard decompositions has been recently developed by two different approaches: the first one for closed 3-manifolds via crystallization theory, yielding the notion of Gem-Matveev complexity; the oth
Externí odkaz:
http://arxiv.org/abs/1203.0183
We deal with Matveev complexity of compact orientable 3-manifolds represented via Heegaard diagrams. This lead us to the definition of modified Heegaard complexity of Heegaard diagrams and of manifolds. We define a class of manifolds which are genera
Externí odkaz:
http://arxiv.org/abs/0901.2288
Let $\textup{H}_g$ be a genus $g$ handlebody and $\textup{MCG}_{2n}(\textup{T}_g)$ be the group of the isotopy classes of orientation preserving homeomorphisms of $\textup{T}_g=\partial\textup{H}_g$, fixing a given set of $2n$ points. In this paper w
Externí odkaz:
http://arxiv.org/abs/math/0702570
Let F a closed connected orientable surface bounding a genus g handlebody H. In this paper we find a finite set of generators for the subgroup E(2,g) of the pure mapping class group of the twice punctured torus PMCG(2,g), consisting of the isotopy cl
Externí odkaz:
http://arxiv.org/abs/math/0601255
Autor:
Grasselli, Luigi, Mulazzani, Michele
The aim of this paper is to investigate the relations between Seifert manifolds and (1,1)-knots. In particular, we prove that every orientable Seifert manifold with invariants {Oo,0|-1;(p,q),...,(p,q),(l, l-1)} has a cyclically presented fundamental
Externí odkaz:
http://arxiv.org/abs/math/0510318