Abstract
Click to increase image sizeClick to decrease image size Additional informationNotes on contributorsHelene ShapiroHELENE SHAPIRO received her B.A. degree from Kenyon College in 1975 and her Ph.D. from the California Institute of Technology in 1979, where she was a student of Olga Taussky Todd. She spent one year at the University of Wisconsin and then joined the Department of Mathematics and Statistics at Swarthmore College, where she has been teaching since 1980.
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