Title: BCOV’s Feynman rule for CICY threefolds

Abstract: BCOV’s Feynman rule is a conjectural algorithm used to compute the higher-genus Gromov-Witten invariants of Calabi-Yau threefolds. Complete intersection Calabi-Yau (CICY) threefolds in the product of projective spaces are a totypical class of Calabi-Yau threefolds. In this talk, I will explain our recent approaches to BCOV’s Feynman rule for CICY threefolds, based on joint works with Huailiang Chang, Weiping Li, Jun Li, and Yang Zhou.