
Berge, Claude
Linial-Berge path partition duality ★★★
Conjecture The minimum
-norm of a path partition on a directed graph
is no more than the maximal size of an induced
-colorable subgraph.



Keywords: coloring; directed path; partition
The Berge-Fulkerson conjecture ★★★★
Conjecture If
is a bridgeless cubic graph, then there exist 6 perfect matchings
of
with the property that every edge of
is contained in exactly two of
.





Keywords: cubic; perfect matching
