Notation in Serge Lang - Algebra

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

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


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

Related Questions

Identity Element of $\pi_1 (Y, y_0)$

Updated February 23, 2019 11:20 AM

two maps are not not homotopic equivalent

Updated January 16, 2018 16:20 PM