Refinements of Van Hamme's (E.2) and (F.2) supercongruences and two supercongruences by Swisher

Victor J. W. Guo, Chen Wang

In 1997, Van Hamme proposed 13 supercongruences on truncated hypergeometric series. Van Hamme's (B.2) supercongruence was first confirmed by Mortenson and received a WZ proof by Zu…