Notation in Serge Lang - Algebra

by rrr123   Last Updated September 11, 2019 09:20 AM

In Serge Langs Algebra on page 772 in the middle there is an expression of this form

$$K(A(C))=Z[A(C)]/R(A(C))$$.

I don't understand what $$Z[A(C)]$$ is supposed to mean. Thanks.

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