Contamodules: their history, and applications in commutative and noncommutative algebra

(Informal subtitle: the above title should be taken with a grain of salt. There's lots of history, and very little applications towards the end.)

The slides of my today's talk in Zvánovice (Czech Republic) on the history of contramodules and the prehistory and history of my studies of them.

Big pdf file (compiled with the \pause commands turned on) -- http://positselski.narod.ru/contramodules.pdf

Small pdf file (compiled with the \pause commands turned off) -- http://positselski.narod.ru/contramodules-nopause.pdf