Speaker: M. Feigin (University of Glasgow)
Date and time: 16.02.2022, 17:00 (GMT +03:00)
Title: Rational and trigonometric solutions of WDVV and related equations
Abstract: I am going to discuss a class of solutions of WDVV equations which are constructed in terms of special collections of vectors with multiplicities. These solutions can be viewed as the trigonometric version of a class of rational solutions introduced by Veselov about 20 years ago. In the case of root systems rational solutions are almost dual to Frobenius manifold structure on the space of orbits of the Coxeter group. The class of rational solutions is closed under the natural operations of taking subsystems and restrictions. We show that similar operations can be applied in the trigonometric settings. In the case of root systems trigonometric solutions are expected to be almost dual to Frobenius manifold structures on the orbit spaces of the extended affine Weyl groups, and in the simply-laced cases they are known to describe quantum cohomology of the resolutions of simple singularities.
I am also going to discuss a very close relation between WDVV equations and the commutativity equations F_i F_j = F_j F_i. These equations appeared in the supersymmetric mechanics and they also admit special trigonometric and rational solutions.
The talk is based on joint works with M. Alkadhem.
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