20Bxx Permutation groups
- 20B05 General theory for finite groups
- 20B07 General theory for infinite groups
- 20B10 Characterization theorems
- 20B15 Primitive groups
- 20B20 Multiply transitive finite groups
- 20B22 Multiply transitive infinite groups
- 20B25 Finite automorphism groups of algebraic, geometric, or combinatorial structures [See also 05Bxx, 12F10, 20G40, 20H30, 51-XX]
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20B27 Infinite automorphism groups [See also 12F10]
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- 20B30 Symmetric groups
- 20B35 Subgroups of symmetric groups
- 20B40 Computational methods
- 20B99 None of the above, but in this section