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05A05 - Permutations, words, matrices [MSC 2020] |
05A10 - Factorials, binomial coefficients, combinatorial functions [MSC 2020] |
05A15 - Exact enumeration problems, generating functions [MSC 2020] |
05A19 - Combinatorial identities, bijective combinatorics [MSC 2020] |
05E16 - Combinatorial aspects of groups and algebras [MSC 2020] |
05E45 - Combinatorial aspects of simplicial complexes [MSC 2020] |
06A07 - Combinatorics of partially ordered sets [MSC 2020] |
11B65 - Binomial coefficients; factorials; $q$-identities [MSC 2020] |
11B75 - Other combinatorial number theory [MSC 2020] |
20F55 - Reflection and Coxeter groups (group-theoretic aspects) [MSC 2020] |
52B05 - Combinatorial properties (number of faces, shortest paths, etc.) [MSC 2020] |