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Linear representations of algebras and groups, Lie theory, associative algebras, multilinear algebra.

3 votes

Easy way to understand theta basis for X-cluster algebras of finite type?

There's another answer which doesn't work in full generality, but is often easier to work with, especially if you know the A-type theta functions really well. When the exchange matrix has full rank, X …
Greg Muller's user avatar
11 votes
Accepted

Easy way to understand theta basis for X-cluster algebras of finite type?

Probably the shortest answer, especially in finite-type: X-type theta functions are monomials times F-polynomials Making this precise is a bit fiddly, because there are multiple conventions and (more …
Greg Muller's user avatar