20Exx Structure and classification of infinite or finite groups
- 20E05 Free nonabelian groups
- 20E06 Free products, free products with amalgamation, Higman-Neumann- Neumann extensions, and generalizations
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20E07 Subgroup theorems; subgroup growth
(1)
- 20E08 Groups acting on trees [See also 20F65]
- 20E10 Quasivarieties and varieties of groups
- 20E15 Chains and lattices of subgroups, subnormal subgroups [See also 20F22]
- 20E18 Limits, profinite groups
- 20E22 Extensions, wreath products, and other compositions [See also 20J05]
- 20E25 Local properties
- 20E26 Residual properties and generalizations; residually finite groups
- 20E28 Maximal subgroups
- 20E32 Simple groups [See also 20D05]
- 20E34 General structure theorems
- 20E36 Automorphisms of infinite groups [For automorphisms of finite groups, see 20D45]
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20E42 Groups with a BN-pair; buildings [See also 51E24]
(1)
- 20E45 Conjugacy classes
- 20E99 None of the above, but in this section