Here is a link to my old webpage at the University of Illinois at Urbana-Champaign.
Here is a link to the webpage for the Spring 2017 Math 751 General Topology course I taught at Hunter.
My research papers in arXiv.
My March 15, 2017 talk at the Hunter College GRECS Seminar, ``Groups as geometric objects.
My office at Hunter is HE 917, tel. 212-772-5303