ALLEN, RICHARD  


A native New Englander, Rich graduated from Boston College and received his Ph.D. from Indiana University. During 198486 he worked on an intelligent geometry tutor in the artificial intelligence research group at IRISA in Rennes, France. His professional interests subsequently expanded to include use of computer geometry systems in schools both in this country and in France. During 199192 and again during 199899, he returned to France, to IMAG in Grenoble, to continues his research collaboration on intelligent geometry systems and to participate in interdisciplinary research on the cognitive effects of the use of such systems. His interests have further evolved to include the geometry of Islamic patterns and bioinformatics.His wife, Wendy, is professor of French at St. Olaf. His son, Joshua, and his daughter, Sarah, both graduated from another Northfield college. Rich and Wendy led the Term in the Middle East in 200102 and the Global Semester in 200506 and again in 200809.  
BERLINER, ADAM  


Adam arrived at St. Olaf in 2009, having received his Ph.D. in 2009 from the University of Wisconsin – Madison. He is no stranger to Northfield, however, as he earned his B.A. from another Northfield liberal arts school in 2002. Adam’s academic interests are in combinatorial matrix theory, linear algebra, graph theory, and issues in undergraduate mathematics education. Despite his time in Wisconsin, Adam remains an avid Twins and Vikings Fan. In his spare time, Adam enjoys tennis, swimming, cooking & baking, and watching reality television (especially Survivor).  
DIETZ, JILL  


Jill earned her B.A. in mathematics from Brandeis University in 1986, and her Ph.D. from Northwestern University in 1991. After graduating, she spent four years at the University of Washington in Seattle and one year at Gettysburg College, then finally returned to her Minnesota roots. Her main mathematical interests are in algebra, algebraic topology, and convincing undergraduates to do research in these and other areas. Jill is an avid vegetarian who enjoys cooking, camping and hiking, throwing pots in her Dad’s studio, and crossword puzzles.  
DIVERIS, KOSMAS  


Kos joins the faculty at St. Olaf in 2012 after completing his Ph.D. at Syracuse University. His mathematical interests are focused around commutative algebra and its interactions with neighboring fields. When not thinking about math, Kos enjoys spending his time outdoors, trying new foods, and improving his carpentry skills. To be completely honest, he is also often thinking about math while enjoying these other hobbies.  
GARRETT, KRISTINA  


After earning her S.B. in mathematics from M.I.T. in 1994, Tina spent two years playing amateur rugby and building a nonprofit Minneapolis youth center from the ground up. Returning to graduate school at the University of Minnesota, she studied combinatorics and group theory, earning her PhD in 2001. Tina spent four years teaching at Carleton College before coming to St. Olaf. Her main mathematical interests are in enumerative combinatorics (partition theory, basic hypergeometric series and special functions), computational combinatorics, and in encouraging students to participate in undergraduate research. Tina is also an avid racquetball player and rarely misses a Vikings game on television.  
HANSON, BRUCE  


Bruce Hanson grew up in Duluth, attended St. Olaf College and got his PhD from the University of Wisconsin, Madison in 1982, the same year that he began teaching at St. Olaf. His research interests include quasiconformal mappings and analysis on metric spaces. He has spent sabbaticals in Sweden and Finland, giving him a chance to engage in his passion for learning foreign languages. Bruce has four sons: Shane, Anders, Mats and Leif and in his spare time he loves to sing, play guitar, ride his road bike and watch his sons compete in various sporting events.  
HUMKE, PAUL  


Paul came to St. Olaf n years ago as a Visiting Associate Professor, and found he couldn’t leave. His 1972 Ph.D. is from the University of Wisconsin and he continues an active research career in real analysis. He also serves as the North American Director of the Budapest Semesters in Mathematics program, and is a managing editor for the research journal, Real Analysis Exchange. He, his wife, Bonnie, and three children, Kristi, Eric, and Peter, enjoy classical music and are active outdoor people. Kristi has two children and is a pastor. Eric is in the M.D.–Ph.D. program at the University of Michigan, and Peter attends Vanderbilt University. (2003)  
MATSUURA, RYOTA  


Ryota earned his S.B. in mathematics with computer science from M.I.T. in 1997, his M.A.T. in mathematics education from Boston University School of Education in 2000, and his Ph.D. in mathematics (algebraic number theory) from BU in 2008. In between, he spent two years working as a software engineer and three years as a high school math teacher in the Boston area. His mathematics education interests include mathematical habits of mind, preparation of preservice teachers, and professional development for inservice teachers. In his spare time, Ryota enjoys spending time with his wife Sarah and their daughter Elizabeth.  
MCKELVEY, STEVEN  


Steve is a Phi Beta Kappa graduate of Grinnell College. He completed his Ph.D. at Brown University in operations research—more specifically, in the field of network equilibria. In addition to work in largescale network equilibria, Steve is involved with the mathematical modeling of biological systems, primarily population levels of endangered species. Before coming to St. Olaf in 1985, he held summer positions with the Washington, D.C. headquarters of NASA and the Internal Revenue Service. He has also spent three summers working as an actuarial trainee. Between college and graduate school, Steve spent a year working with the Illinois Bureau of the Budget as a systems analyst. Steve recently completed a two year term as President of the Resource Modeling Association (RMA), an interdisciplinary, international professional organization using quantitative tools to better manage natural resources of all types. Steve’s leisure time is spent canoeing, hiking, skiing, folk dancing, and supporting progressive politics.  
PURIN, MARJU  


Marju is a 2011 graduate of Syracuse University who comes to St. Olaf College after one year at Manhattan College. A native of Estonia, she says that Northfield reminds her of home. Marju is an algebraist who specializes in homological algebra and representation theory. She has diverse interests ranging from wind surfing to ceramics, and from mushrooms to chocolate.  
RICHEY, MATT  


Matt is originally from Kentucky and received his B.A. from Kenyon College and his Ph.D. from Dartmouth. He came to St. Olaf in 1986 and has been here ever since. His areas of research are Applied Mathematics, Mathematical Computing, and Bayesian Computational Statistics. In addition, Matt has been designed and implemented software for industry and is a consultant to the college’s efforts to redesign the student information system. In his spare time (the little that remains) Matt enjoys running, listening to music, and cooking. He is also involved in a lifelong effort to correct the commonly held belief that the sacrifice bunt in baseball is an effective strategic ploy. So far, he has failed.  
ROBACK, PAUL  


Paul is an applied statistician, having attacked problems ranging from clinical trials in panic disorder to population models for bowhead whales to indicators of welfare recidivism to the effects of forest fragmentation on birds. He returns to The Hill after a long hiatus; after graduating from St. Olaf in 1989 with majors in mathematics and economics, Paul earned an M.S. in statistics from Iowa State, worked as a clinical statistician for Eli Lilly, earned a Ph.D. in statistics from Colorado State, and taught for several years at both Bucknell and Connecticut College. In addition to applied statistical consulting, Paul’s research interests include Bayesian statistics, nonparametric methods, and statistical education. Paul and his wife Karen have three young children–Samantha, Timothy, and Sophie–who keep his office decorated with fine artwork. Outside of his office, Paul can often be found on some athletic court or field, playing basketball, tennis, soccer, and maybe even broomball. Or, he can be found putting his statistical knowledge to good use–attempting to win the coveted Joe Boe Trophy in the Boe Fantasy Football League. (2004)  
SANFT, KEVIN  


Kevin teaches courses in Mathematics and Computer Science. He is also a researcher in the Center for Interdisciplinary Research. His research interests including modeling, simulation and software for projects in the broad fields of computational science (especially computational biology), systems biology, applied mathematics, and computer science. He enjoys mentoring undergraduate research and is actively seeking students interested in pursuing projects in these areas for the academic year and summer. Kevin received his Ph.D. in Computer Science from the University of California, Santa Barbara in 2012. He is from Minnesota originally, and attended Augsburg College and worked at the Mayo Clinic and Medtronic prior to graduate school.  
SMITH, KAY  


Kay Smith received her B.S. from Bucknell University in 1972 and her Ph.D. from Yale University in 1979. After teaching at Davidson College for three years, she came to Saint Olaf in 1980. Her graduate studies focused on mathematical logic and algebra. Since coming to St. Olaf, her mathematical interests have expanded to include geometry, discrete mathematics, the history of mathematics, and connections between mathematics and the arts. Kay currently serves as Director of Mathematics Placement. She is married to Arnold Ostebee, another math faculty member; they have two grown children. When not doing math, Kay enjoys baking, particularly chocolate desserts, and the arts.  
VANDIVER, BECKY  


Becky received her B.S. in Mathematics from The College of William and Mary and her Ph.D. in Applied Mathematics from the University of Arizona. She spent two years at Bryn Mawr College as a postdoc funded by the Howard Hughes Medical Institute. She has a broad interest at the interface of mathematics, biology, and mechanics. She also has a great passion for the development of curriculum and programs in mathematical biology. Becky has two young daughters, Regan and Kailey, who keep her busy when she’s not on campus. She also enjoys tennis, golf, biking and playing the piano.  
ZORN, PAUL  


Paul’s life began in southern India, near the confluence of the Bay of Bengal, the Arabian Sea, and the Indian Ocean. He was educated through high school atKodaikanal International School, high in the cool, green Palni Hills in the South Indian state of Tamilnadu (formerly Madras). He was an undergraduate atWashington University in St. Louis, majoring in mathematics and English literature. He did his Ph.D., in several complex variables, at the University of Washington, Seattle, and came to St. Olaf in 1981. His professional interests include complex analysis, mathematical exposition, and textbook writing. During 19952000 he was Editor of Mathematics Magazine. In 2011 and 2012 he will serve as President of theMathematical Association of America. Paul and his wife, Janet, an occupational therapist, have two grown daughters, Anne and Elizabeth. Both are named for Austen heroines, and both graduated from (other) liberal arts colleges. 