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math.CO2004
Tales of Hoffman
Yonatan Bilu
Hofmman's bound on the chromatic number of a graph states that . Here we show that the same bound, or slight modifications of it, hold for several grap…
math.CO2004★ 3 cited
Monotone Maps, Sphericity and Bounded Second Eigenvalue
Yonatan Bilu, Nati Linial
We consider {\em monotone} embeddings of a finite metric space into low dimensional normed space. That is, embeddings that respect the order among the distances in the original spa…