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THe largest eigenvalue of sparse random graphs

Michael Krivelevich, Benny Sudakov

math.COarXiv:math/0106066

Abstract

We prove that for all values of the edge probability p(n) the largest eigenvalue of a random graph G(n,p) satisfies almost surely: λ1(G)=(1+o(1))maxΔ,np, where Δis a maximal degree of G, and the o(1) term tends to zero as maxΔ,np tends to infinity.

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