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Nankai Symposium on Physics,Geometry and Number Theory 2017
Nankai Symposium Physics,Geometry and Number Theory 2017
2017/3/28
Nankai Symposium on Physics,Geometry and Number Theory 2017 is sponsored by the Chen Shengshen Institute,Nankai University.Dates:July 31-August 5,2017.
On the heterochromatic number of hypergraphs associated to geometric graphs and to matroids
hypergraphs associated geometric graphs matroids
2010/11/24
The heterochromatic number hc(H) of a non-empty hypergraph H is the smallest integer k such that for every colouring of the vertices of H with exactly k colours, there is a hyperedge of H all of whos...