A memorial commemoration for the late Theodore J. Lowi, the John L. Senior Professor of American Institutions Emeritus, will be held Saturday, April 21, in the chapel at Anabel Taylor Hall. “Theodore J. Lowi: Celebrating A Half Century at Cornell,” from 4:30 to 6 p.m., will be followed by a reception in the Founders Room in Anabel Taylor Hall. Lowi died in 2017 at the age of 85.