Mathematische Annalen

, 336:51

A deRham model for Chen-Ruan cohomology ring of Abelian orbifolds


DOI: 10.1007/s00208-006-0774-3

Cite this article as:
Chen, B. & Hu, S. Math. Ann. (2006) 336: 51. doi:10.1007/s00208-006-0774-3


We present a deRham model for Chen-Ruan cohomology ring of abelian orbifolds. We introduce the notion of twist factors so that formally the stringy cohomology ring can be defined without going through pseudo-holomorphic orbifold curves. Thus our model can be viewed as the classical description of Chen-Ruan cohomology for abelian orbifolds. The model simplifies computation of Chen-Ruan cohomology ring. Using our model, we give a version of wall crossing formula.

Mathematics Subject Classification (2000)


Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  1. 1.Department of MathematicsSichuan UniversityChengduP.R.CHINA
  2. 2.Centre de recherches mathématiquesUniversité de MontréalCanada