Periodic integrals and tautological systems

  • Bong H. Lian

    Brandeis University, Waltham, USA
  • Ruifang Song

    University of Wisconsin at Madison, USA
  • Shing-Tung Yau

    Harvard University, Cambridge, United States


We study period integrals of CY hypersurfaces in a partial flag variety. We construct a regular holonomic system of differential equations which govern the period integrals. By means of representation theory, a set of generators of the system can be described explicitly. The results are also generalized to CY complete intersections. The construction of these new systems of differential equations has lead us to the notion of a tautological system.

Cite this article

Bong H. Lian, Ruifang Song, Shing-Tung Yau, Periodic integrals and tautological systems. J. Eur. Math. Soc. 15 (2013), no. 4, pp. 1457–1483

DOI 10.4171/JEMS/396