Professor Emeritus of Mathematics Donald J. Lewis passed away February 25 after a brief illness. Visitation will be Monday, March 9, 4 p.m. to 7 p.m., with sharing of remembrances immediately following, at Muehlig Funeral Home, 403 S. Fourth Ave., Ann Arbor, MI  48104.  A funeral mass was held Tuesday, March 10, 10:30 a.m., at St. Francis of Assisi Church, 2250 E. Stadium Blvd., Ann Arbor, MI  48104.  In lieu of flowers, memorial contributions may be made to the Donald J. Lewis Professorship in Mathematics (571193), University of Michigan Department of Mathematics, 530 Church Street, Ann Arbor, MI 48109-1043.  Donations can be made online at this link.  A full obituary is available here.