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Abstract des Vortrages von Atsushi Takahashi

Orbifold Projective Lines and Extended Cuspidal Weyl Groups

We report on our recent study on a correspondence among orbifold projective lines, cusp singularities and cuspidal Weyl groups. In particular, we discuss an isomorphism of Frobenius manifolds between the one from the Gromov-Witten theory for an orbifold projective line and the one associated to the invariant theory of an extended cuspidal Weyl group.