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LIST OF PARTICIPANTS
Babai P Frankl Isomorphisms of Cayley graphs 1 35
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3-colorable abelian adjacent ascending collection assume bipartite graph block branching of G Budapest cardinality Cayley graphs chromatic number COLLOQUIA MATHEMATICA SOCIETATIS colors column COMBINATORICS complete graph component condition conjecture contradiction Corollary corresponding decomposition defined definition denote digraph directed graph dismantlable by irreducibles doubly irreducibles elements equality equivalent Erdos exactly exists finite four-element crown friendship graph G contains geodetic graphs given graph G Hence holds Hungary hypergraph implies induced subgraph integer isomorphic JANOS BOLYAI JANOS BOLYAI 18 KESZTHELY KESZTHELY HUNGARY labeled lattice Lemma Let G linearly independent Math MATHEMATICA SOCIETATIS JANOS matrix matroid maximal minimal Moore graph nodes obtained partially ordered set path planar graph points problem proof of Theorem Proposition prove rows satisfying sequence SOCIETATIS JANOS BOLYAI split graph strongly connected Suppose tactical decomposition transversal trees undirected vector vertex vertex-set vertices