On quantum cohomology ring of elliptic $\mathbb{P}^1$ orbifolds
  We compute quantum cohomology ring of elliptic $\mathbb{P}^1$ orbifolds via orbi-curve counting. The main technique is the classification theorem which relates holomorphic orbi-curves with certain orbifold coverings. The countings of orbi-curves are related to the integer solutions of Diophantine equations. This reproduces the computation of Satake and Takahashi in the case of $\mathbb{P}^1_{3,3,3}$ via different method. 
Hansol Hong, Hyung-Seok Shin
math.SG math.NT