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$\beta $E ensemble
We consider the extremes of the logarithm of the characteristic polynomial of matrices from the C
$\beta $E ensemble. We prove convergence in distribution of the centered maxima (of the real and imaginary parts) toward the sum of a Gumbel variable and another independent variable, which we characterize as the total mass of a ‘derivative martingale’. We also provide a description of the landscape near extrema points.