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The non-trivial self-cover conjecture for infra-nilmanifolds
The non-trivial self-cover conjecture. The infra-nilmanifold $\Gamma \backslash G$ admits a non-trivial self-cover if and only if the nilmanifold $N \backslash G$ admits an expandi…
openco-hopfian-groups infra-nilmanifolds self-covers
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The non-trivial self-cover conjecture for infra-nilmanifolds