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The word problem and the Aharoni-Berger-Ziv conjecture on the connectivity of independence complexes
Graphs independence complexes topological connectivity algorithm
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2010/12/9
For each finite simple graph G, Aharoni, Berger and Ziv consider a recur-sively defined number (G) 2 Z [ {+1} which gives a lower bound for the topological connectivity of the independence complex IG...
Solution of the Word Problem in the Singular Braid Group
Singular braid word problem
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2010/2/26
Singular braids are isotopy classes of smooth strings which are allowed to cross each other pairwise with distinct tangents. Under the usual multiplication of braids, they form a monoid. The singular ...