Speaker：Atsushi Takahashi（Osaka University, Japan）

Time：2022-11-15, 09:00

Location：Zoom ID：820 9210 0438（Pwd：1115）

Abstract:

This is a refinement of Dubrobin’s result (LNM1620, Appendix J). We associate a primitive form to a deformation of the Weierstrass $\wp$-function and show that its period mapping gives an isomorphism of two Frobenius structures on the base space, the one given by the primitive form and the other defined by the invariant theory of the elliptic Weyl group of type $A_1^{(1,1)*}$. A perspective from the categorical view point will also be given.