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math.AG2020★ 1 cited
The universal sheaf as an operator
Andrei Neguţ
We compute the universal sheaf of moduli spaces M of sheaves on a surface S, as an operator {Symmetric Polynomials} K(M), thus generalizing the viewpoint of Carlsson-…
math.QA2020★ 1 cited
The R-matrix of the quantum toroidal algebra
Andrei Neguţ
We consider the R-matrix of the quantum toroidal algebra of type gl_1, both abstractly and in Fock space representations. We provide a survey of a certain point of view on this obj…