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math.CO2020
Spaces that can be ordered effectively: virtually free groups and hyperbolicity
Anna Erschler, Ivan Mitrofanov
We study asymptotic invariants of metric spaces, defined in terms of the travelling salesman problem, and our goal is to classify groups and spaces depending on how well they can b…
math.CO2020
On cogrowth function of uniformly recurrent sequences
Igor Melnikov, Ivan Mitrofanov
For a sequence we count the number of minimal forbidden words no longer then and prove that