Tues., May 19

5:30 P.M. 80th Anniversary of Georgian Independence. Speakers include Mark von Hagen, director, the Harriman Institute; His Holiness, Ilya II; Tedo Japaridze, ambassador; Peter Chkheidze, ambassador and Nelson Ledsky, ambassador. Keynote speaker: William H. Courtney, Special Assistant to the President, Russian, Ukrainian and Eurasian Affairs. Sponsored by the Georgian Association, the Harriman Institute and the America Georgia Institute. Semi-formal or traditional Georgian attire. Information: 427-8806 or 325-3470. Kellogg Center, 15th Floor, International Affairs.

“The Caucasian Chalk Circle” Mia Yoo as Grusha in Brecht’s “The Caucasian Chalk Circle” at La MaMa Experimental Theater Club. Graduate students of the Oscar Hammerstein II Center for Theater Studies at Columbia’s School of the Arts are part of the collaborating team staging Bertold Brecht’s “The Caucasian Chalk Circle” at La MaMa Experimental Theater Club, 74A E. 4th St., until May 31. The play, which is directed by Andrei Serban (director of the Hammerstein Center), co-directed by Nikolaus Wolcz, with music composed by Elizabeth Swados, is a parable of the effects of war on individual lives, personal responsibility and human choices in the face of profound difficulty and the paradoxes of life. The 16 performing graduating students, whom Serban has trained using the same techniques that he used when forming La MaMa’s original Great Jones Repertory, take on multiple roles and many major roles are played by different actors over the course of the performance. For ticket information, 475-7710.

Wed., May 20

12:05 P.M. Music Recital, with the choral group I Cantori New York. Interchurch Noontime Concert Series. Interchurch.

Sun., May 31

4:00 P.M. Book Discussion: “Brother Paul” and “Lost Phoebe,” by Theodore Dreiser. Columbia Literary Society. General Studies Alumni Association. Baer Room, Lewisohn.

Tues., June 9

7:00 P.M. Black and Blue: School of the Arts Alumni Reception. Special guest Anna Quindlen. Black-tie event sponsored by the School of the Arts Alumni Association. Advance tickets $20 or $25 at the door. Call 854-7821 for more information. Jacket and tie required. The Century Club, 7 West 43rd St.

Thurs.–Sat., June 11–13

6:00 P.M. The Centennial Celebration of the School of Social Work: “Celebrating the Past, Confronting the Present, Visioning the Future.” Centennial welcome by George Rupp, President, and Ronald A. Feldman, Dean, School of Social Work. Registration, information, full program: 854-7656 or 854-5185. Price: $375. Low Rotunda.

Jeanne d’Arc Through the Centuries: Seer, Soldier, Sinner, Saint. From the Jeanne d’Arc Griscom Collection of the Rare Book and Manuscript Library. Noon to 7:45 P.M., Mon., and 9:00 A.M.–4:45 P.M., Tues.–Fri. Through Sun., June 13. Kempner Exhibition Room, Rare Book and Manuscript Library, Butler.

Brushed Voices: Calligraphy in Contemporary China. A collection of 64 recent works by more than 20 leading calligraphers from the People’s Republic of China. Wed.–Sat., 1:00 P.M.–5:00 P.M. Through Wed., Jun. 6. Wallach Art Gallery, Schermerhorn.

School of Social Work’s Triad of Exhibitions marking its Centennial. Archival photographs, papers, books and memorabilia tracing the School’s history, on view in Low. The publications (and their authors) that have contributed to the School’s preeminence in the profession, on view, 3rd floor, Lehman. A selection of papers and archival materials from the Mary Richmond Collection, in the Rare Book and Manuscript Library, Butler. Through September. To confirm viewing hours, call 854-7656.

Fri., May 22

11:00 A.M. The Fourteenth Annual Edward J. Sachar Award, presented to Huda Akil, University of Michigan. Followed by a lecture on “Searching for the Biological Bases of Depression: From Sachar’s Ideas to Today’s Strategies.” Dept. of Psychiatry. 8th Floor Auditorium, NYSPI.

Tues., May 26

Noon.“Role of the Aquaporins as CO² Channels,” by Walter F. Boron, Yale School of Medicine. Dept. of Physiology and Cellular Biophysics. Rover Conference Room, P&S 11-505.

Thurs., May 28

4:00 P.M. “RNA Structure and Recognition: Principles, Patterns and Diversity,” by Dinshaw Patel, Sloan-Kettering Cancer Center. Dept. of Cellular Biochemistry and Biophysics. 301 Hammer Health Sciences Center.

Wed., June 3

7:30 A.M. “Convergence and Divergence in Cross-National Health Policy,” by Larry Brown, School of Public Health. CPPN Grand Rounds. Clark Conference Center.

Tues., June 9

Noon. “Chemoattractants Encode ‘Stop’ as well as ‘Go’ Signals,” by Samuel C. Silverstein, John C. Dalton professor of physiology and cellular biophysics and John Loike, research scientist. Physiology & Cellular Biophysics Seminar. Rover Conference Room, P&S 11-505.