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math.CO2022
Critical subgraphs of Schrijver graphs for the fractional chromatic number
Anna Gujgiczer, Gábor Simonyi
Schrijver graphs are vertex-color-critical subgraphs of Kneser graphs having the same chromatic number. They also share the value of their fractional chromatic number but Schrijver…
math.CO2022
Structured Codes of Graphs
Noga Alon, Anna Gujgiczer, János Körner +2
We investigate the maximum size of graph families on a common vertex set of cardinality such that the symmetric difference of the edge sets of any two members of the family sat…