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math.GT2012★ 2 cited
The topology of the minimal regular cover of the Archimedean tessellations
Thierry Coulbois, Daniel Pellicer, Miguel Raggi +2
In this article we determine, for an infinite family of maps on the plane, the topology of the surface on which the minimal regular covering occurs. This infinite family includes a…
cs.DM2012
Forbidden Configurations: Finding the number predicted by the Anstee-Sali Conjecture is NP-hard
Miguel Raggi
Let F be a hypergraph and let forb(m,F) denote the maximum number of edges a hypergraph with m vertices can have if it doesn't contain F as a subhypergraph. A conjecture of Anstee…