Title: Minimax Rényi Redundancy,
Abstract: The redundancy for universal lossless compression of discrete memoryless
sources in Campbell's setting is characterized as a minimax Rényi divergence,
which is shown to be equal to the maximal $\alpha$-mutual information via a
generalized redundancy-capacity theorem. Special attention is placed on the
analysis of the asymptotics of minimax Rényi divergence, which is determined
up to a term vanishing in blocklength.