Commutative algebra 13 (Topology of Spec R)
Channel: Richard E Borcherds
Date: 18/08/2020

This lecture is part of an online course on commutative algebra, following the book
"Commutative algebra with a view toward algebraic geometry" by David Eisenbud.

In this lecture we discuss the topology of the spectrum Spec R of a ring, 
showing that it is compact, sometimes connected, and sometimes irreducible. 

Reading: Lectures 9-15 about visualizing rings do not correspond directly to sections of the textbook.
Exercises: 1.10, 2.25
Draw Spec Z[Z/6Z] = Z[x]/(x^6-1), the group ring of the cyclic group of order 6.