Mangoes and Blueberries
- Cite this article as:
- R, B. Combinatorica (1999) 19: 267. doi:10.1007/s004930050056
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Dedicated to the memory of Paul Erdős
We prove the following conjecture of Erdős and Hajnal:
For every integer k there is an f(k) such that if for a graph G, every subgraph H of G has a stable set containing \(\) vertices, then G contains a set X of at most f(k) vertices such that G−X is bipartite.
This conjecture was related to me by Paul Erdős at a conference held in Annecy during July of 1996. I regret not being able to share the answer with him.