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Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology.

11 votes
1 answer
537 views

higher dimensional analogues of the Manin-Drinfeld theorem

The Manin-Drinfeld theorem asserts that a divisor on the compact modular curve $X_0(N)$ which is supported on the cusps is torsion. Equivalently, if $Y_0(N)$ is the open modular curve, the mixed Hod …
johny23's user avatar
  • 123
1 vote
0 answers
165 views

another question on the Manin-Drinfeld theorem

A few days ago I asked a question about possible higher dimensional generalizations of the Manin-Drinfeld theorem. Let me come back to the classical statement. It says that a divisor on the modular …
johny23's user avatar
  • 123