Courses / Activities Supercongruences for rigid Calabi-Yau threefolds of hypergeometric type 48reads 2018-07-3010:00:00 - 11:00:00 103 , Mathematics Research Center Building (ori. New Math. Bldg.)I will present two proofs to the supercongruences for the 14 rigid Calabi-Yau threefolds of hypergeometric type. The existence of such supercongruences has been conjectured by F.-R. Villegas.