This paper studies the extreme gaps between eigenvalues of random matrices. We give the joint limiting law of the smallest gaps for Haar-distributed unitary matrices and matrices from the Gaussian unitary ensemble. In particular, the kth smallest gap, normalized by a factor n−4/3, has a limiting density proportional to x3k−1e−x3. Concerning the largest gaps, normalized by n/logn−−−−√, they converge in Lp to a constant for all p>0. These results are compared with the extreme gaps between zeros of the Riemann zeta function.
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