Discussion. Diasporal Vertigo. 6-8 p.m., Hyde Park Art Center, 5020 S. Cornell Ave., 773-324-5520, hydeparkart.org, free. Author Valorie Thomas speaks with painter Candida Alvarez and film-maker Cauleen Smith, whose work is currently on exhibition at the Hyde Park Art Center. The event is co-sponsored by the Center for the Study of Race, Politics and Culture at the University of Chicago.