?? line bundle over torus ..... ????? .....
?? divisor class group .... ????? .....
?? every ideal in the laurent polynomials is principal .... ???? ....
???? ....
??? AG morphism from reps of Z/2 (...) to modules of laurent polynomials .... ????
??? dimensional core .... ????? .... ????? ........
???????? .......
??? real torus here as .... ?? not having non-trivial loops .... ??????? ...... ??? ??? non-trivial Z/2-torsor ???? ..... ??????? ..... ????? .....
?? naive visual intuition for line bundle over punctured complex ("argand") plane ... "branch cut" .... ?????? ...... ???? ..... ?? holomorphicness as property .... ???? ...... ???? .....
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