Constructions of nontautological classes of moduli spaces of curves
Constructions of nontautological classes of moduli spaces of curves
复制标题
曲线模空间非同义反复类的构造
DOI:
--
复制
发表时间:
2001
期刊:
影响因子:
--
通讯作者:
T. Graber
中科院分区:
文献类型:
--
作者:
R. Pandharipande;T. Graber
We construct explicit examples of algebraic cycles in ar M_g (for large g congruent to 2 mod 4) and in M_2,20 (no bar) which are not in the tautological ring. In an appendix we give a general method for computing intersections in the tautological ring.