Good Basic Invariants for Elliptic Weyl Groups and Frobenius Structures
arXiv:2004.03587
Abstract
In this paper, we define a set of good basic invariants for the elliptic Weyl group for the elliptic root system. For an elliptic root system of codimension , we show that a set of good basic invariants gives a set of flat invariants obtained by Saito and Taylor coefficients of the good basic invariants give the structure constants of the multiplication of the Frobenius structure obtained by the author.
32 pages. arXiv admin note: text overlap with arXiv:2004.01871. Rewrote section 6;added appendices, fixed typos