MAA Focus April/May 2010 : Page 2
is published by the Mathematical Association of America in February/March, April/May, June/July, August/September, October/ November, and December/January. Editor: Fernando Gouvêa, Colby College firstname.lastname@example.org Managing Editor: Carol Baxter, MAA email@example.com SeniorWriter:Harry Waldman, MAA firstname.lastname@example.org Please address advertising inquiries to: email@example.com President: David Bressoud First Vice President: Francis Su Second Vice President: Doug Ensley Secretary: Barbara T. Faires Associate Secretary: Gerard Venema Treasurer: John W. Kenelly Executive Director: Tina H. Straley Director of Publications for Journals and Communications: Ivars Peterson MAA FOCUS Editorial Board: Donald J. Albers; Robert Bradley; Joseph Gallian; Jacqueline Giles; Colm Mulcahy; Michael Orrison; Peter Renz; Sharon Cutler Ross; Annie Selden; Hortensia Soto-Johnson; Peter Stanek; Ravi Vakil. Letters to the editor should be addressed to Fernando Gouvêa, Colby College, Dept. of Mathematics, Waterville, ME 04901, or by email to firstname.lastname@example.org. Subscription andmembership questions should be directed to the MAA Customer Service Center, 800-331-1622; email: email@example.com; (301) 617-7800 (outside U.S. and Canada); fax: (301) 206-9789. MAA Headquarters: (202) 387-5200. Copyright © 2010 by the Mathematical Association of America (Incorporated). Educational institutions may reproduce articles for their own use, but not for sale, provided that the following citation is used: “Reprinted with permission of MAA FOCUS, the newsmagazine of the Mathematical Association of America (Incorporated).” Periodicals postage paid at Washing- ton, DC and additional mailing offices. Postmaster: Send address changes toMAA FOCUS, Mathematical Association of America, P.O. Box 90973, Washington, DC 20090-0973. ISSN: 0731-2040; Printed in the United States of America. On the cover: Pittsburgh, PA site of this year’s MathFest. Photograph courtesy of VisitPitts- burgh.com.