A model for the orbifold Chow ring of weighted projective spaces

Abstract

We construct an isomorphism of graded Frobenius algebras between the orbifold Chow ring of weighted projective spaces and graded algebras of groups of roots of the unity.

The main result of this paper was briefly stated in our preprint math.AG/0610617 (version 1). Here we explain the construction in detail and give complete proofs. The preprint math.AG/0610617 has been updated (version 2) and this result is removed