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Jan 20, 2018 at 17:36 comment added Mark Spivakovsky What do you mean by the sentence "we naturally view the $A$-module $M$ as a $B$-module via the inclusion $A\subset B$" ? What is the "natural" $B$-module structure?
Jan 18, 2018 at 15:51 history edited YCor CC BY-SA 3.0
fixed typos, added definition, removed tags
Jan 18, 2018 at 15:31 history edited Qfwfq CC BY-SA 3.0
(strange notation)
Jan 18, 2018 at 13:50 history asked Pierre CC BY-SA 3.0