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

3 votes
Accepted

IntersectInP bug of Macaulay2

There is no bug. You are trying to follow the documentation of a newer version than the one you are running. You should get a newer version of Macaulay2.
Ricardo Buring's user avatar
4 votes
Accepted

Bracket systems (generalization of Poisson brackets)

I'm no expert on operads but it seems that a "bracket system" can be formalized as an operad; see e.g. the Poisson operad here, the "product-complete" condition could be related to having a Hopf ope …
Ricardo Buring's user avatar
1 vote
0 answers
180 views

Skew-symmetric multi-derivations of $k[x_1,…,x_n]/I$

Let $I = \langle f_1, \ldots f_r \rangle$ be an ideal in $R=k[x_1,\ldots,x_n]$ where $k$ is a field, and put $A = R/I$. (If $I$ is prime then $A$ is the coordinate ring of an irreducible affine varie …
Ricardo Buring's user avatar