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< | 13-XX | 13Bxx >
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
< | 13-XX | 13Bxx >
 
 
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