“2(4)/7” by Nicholas Hill. Reception 5 to 7 p.m., RSVP at https://www.otterbein.edu/art/art-exhibit-schedule/   The art and 23-year career of Otterbein Professor Hill is celebrated through the prints, paintings, collages and mixed media works made during his residencies in India, Chile, Germany and Japan. Fisher Gallery, Roush Hall, 27 S. Grove St.  Open daily, 9 a.m. to 9 p.m. Exhibit on display through Dec. 18