https://ocw.mit.edu/courses/18-786-number-theory-ii-class-field-theory-spring-2016/resources/mit18_786s16_lec8/
Tate Cohomology and Inverse Limits | Number Theory II: Class Field Theory | Mathematics | MIT...
Lecture notes on Tate cohomology and inverse limits.
tate cohomologyinverse limitsnumber theoryclass fieldmathematics