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String graphs. I. The number of critical nonstring graphs is infinite

✍ Scribed by Jan Kratochvíl

Book ID
107884321
Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
971 KB
Volume
52
Category
Article
ISSN
0095-8956

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## Abstract The fractional chromatic number of a graph __G__ is the infimum of the total weight that can be assigned to the independent sets of __G__ in such a way that, for each vertex __v__ of __G__, the sum of the weights of the independent sets containing __v__ is at least 1. In this note we g