Even unimodular Lorentzian lattices and hyperbolic volume
classification
🧮 math.GT
math.MG
keywords
hyperboliccomputeevenlorentzianunimodularvolumearithmeticautomorphism
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We compute the hyperbolic covolume of the automorphism group of each even unimodular Lorentzian lattice. The result is obtained as a consequence of a previous work with Belolipetsky, which uses Prasad's volume to compute the volumes of the smallest hyperbolic arithmetic orbifolds.
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