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< 20Jxx | 20-XX | 20Mxx >
20-XX Group theory and generalizations
20Kxx Abelian groups
20K01   Finite abelian groups
20K10   Torsion groups, primary groups and generalized primary groups
20K15   Torsion-free groups, finite rank
20K20   Torsion-free groups, infinite rank
20K21   Mixed groups
20K25   Direct sums, direct products, etc.
20K27   Subgroups
20K30   Automorphisms, homomorphisms, endomorphisms, etc.
20K35   Extensions
20K40   Homological and categorical methods
20K45   Topological methods [See also 22A05, 22B05]
20K99   None of the above, but in this section
< 20Jxx | 20-XX | 20Mxx >
American Mathematical Society
American Mathematical Society
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