| 13-XX |
|
|
Commutative rings and algebras |
|
13Axx |
|
General commutative ring theory |
|
|
13A02 |
Graded rings [See also 16W50] |
|
|
13A05 |
Divisibility |
|
|
13A10 |
Radical theory |
|
|
13A15 |
Ideals; multiplicative ideal theory |
|
|
13A18 |
Valuations and their generalizations [See also 12J20] |
|
|
13A30 |
Associated graded rings of ideals (Rees ring, form ring), analytic spread and related topics |
|
|
13A35 |
Characteristic $p$ methods (Frobenius endomorphism) and reduction to characteristic $p$; tight closure [See also 13B22] |
|
|
13A50 |
Actions of groups on commutative rings; invariant theory [See also 14L24] |
|
|
13A99 |
None of the above, but in this section |
