English

Elliptic genera of level $N$ for complete intersections

Algebraic Topology 2023-11-14 v1 Algebraic Geometry

Abstract

We study the elliptic genera of level NN at the cusps of Γ1(N)\Gamma_1(N) for any complete intersection. These genera are described as the summations of generalized binomial coefficients, where each generalized binomial coefficient is related to the dimension and multi-degree of complete intersection. For complete intersection Xn(d)X_n(\underline{d}), write c1(Xn(d))=c1xc_1(X_n(\underline{d}))=c_1x, where xH2(Xn(d);Z)Zx\in H^2(X_n(\underline{d});\mathbb{Z})\cong\mathbb{Z} is a generator. We mainly discuss the values of the elliptic genera of level NN for Xn(d)X_n(\underline{d}) in the case of c1>0,=0c_1>0, =0 or <0<0. In particular, the values about the Todd genus, A^\hat{A}-genus and AkA_k-genus of Xn(d)X_n(\underline{d}) can be derived from the elliptic genera of level NN.

Keywords

Cite

@article{arxiv.2011.08015,
  title  = {Elliptic genera of level $N$ for complete intersections},
  author = {Jianbo Wang and Yuyu Wang and Zhiwang Yu},
  journal= {arXiv preprint arXiv:2011.08015},
  year   = {2023}
}

Comments

18 pages, 1 table

R2 v1 2026-06-23T20:17:11.502Z