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

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Question about formal group schemes

Show your product on $G$ restricts to a product on formal neighborhoods of the identity (via the Hopf algebra correspondence you mentioned these are coalgebra structures on the quotients of the powers …
Justin Noel's user avatar
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3 votes

Geometric realization of Hochschild complex

Sam Gunningham had the right idea, but I would like to fix it up for the construction of the homotopy pullback that I am aware of. Alternatively one can compute $HH(A;A)$ as $\mathrm{Tor}^{A^e}(A,A)$ …
Justin Noel's user avatar
  • 1,738