The Halsey Institute of Contemporary Art presents an evening with photographer and visual ecologist Martha A. Strawn on Tuesday, January 31, 2017 at 6:00 PM in Simons Center for the Arts, Room 309. Free and open to the public. Strawn will deliver a lecture on her recent publication, Across the Threshold of India: Art, Women, and Culture, which documents the creation and significance of threshold diagrams in Indian history and culture. A tradition practiced by Indian women for thousands of years, the diagrams represent highly sophisticated mathematical and cosmological underpinnings that have been handed down from one generation of women to the next. Book signing and reception in the Halsey Institute galleries will follow.