Anne Tyng, the Philadelphia architect and design professor, passed away on December 27. Born in 1920, Tyng was best known as a close collaborator—and even muse—of Louis Kahn, but she herself was an extraordinary figure. She established her career with theoretical writings that reflected a deep interest in mathematics and design, themes that she explored in Simultaneousness, Randomness and Order, her Ph.D. dissertation at the University of Pennsylvania, and pursued throughout her professional life. Anne Tyng: Inhabiting Geometry, an exhibition that opened last year at the Institute of Contemporary Art in Philadelphia, was an elegant summation of her theoretical research on design and of her professional and academic career. Several of Tyng's geometric designs from the ICA show were later exhibited at the Graham Foundation in Chicago, a longtime supporter of her work. The Architect's Newspaper will publish a more extensive obituary written by Srdjan Jovanovic Weiss in our next issue.