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About me
Research and teaching are two complementary parts of my life: I do not see one without the other. The research I am involved in revolves around problems in geometry and topology, usually with some combinatorial aspect.
Abe Shenitzer
My abiding ambition is to present mathematics so that it is seen to be as it is — an art.
Research
Triangulations & characteristic classes
Minimal triangulations and explicit combinatorial formulas for the first Pontryagin class — including the 15-vertex triangulation of the quaternionic projective plane.
Research page →Recent work
Hurwitz numbers of complex reflection groups, geodesic nets, and reinforcement learning on Cayley graphs.
Preprints on arXiv →Teaching
University courses
MATA22, MAT102, 188, 224 and 246 at the University of Toronto — lecture notes, materials and student resources.
Teaching →Curriculum & competition mathematics
Curriculum design and a topic-tagged competition-mathematics problem library.
Competition mathematics →Latest
Recent news and posts
Link to original
Note Type Preview Created Modified Humbled - Jun 11, 2026 Jun 11, 2026 Teaching update News This semester I will be teaching MATA 22 at UTSC. May 4, 2026 May 4, 2026 Last day teaching MAT102 at UTM News This semester I have taught MAT 102(Introduction to Proofs) at UTM.Dec 2, 2025 Dec 2, 2025 Student hours News The last student hours for the immediate future will be held tomorrow and on Friday (June 26th and June 27th). Please check the link for specific hours: student hours calendar. Aug 15, 2025 Aug 12, 2025 Student hours calendar News For the students who are interested in attending student hours regularly, I created a calendar where the schedule of student hours will be present. Here is the link: student hours calendar. Aug 15, 2025 Aug 12, 2025 Student hours update News Student hours will resume next week, on Friday August 9th 1 pm - 4 pm. They will be held in my office, HSB 374. Aug 15, 2025 Aug 12, 2025 Teaching update News I will be teaching MAT 188 and MAT 246 in the 2024-2025 academic year. Aug 15, 2025 Aug 12, 2025
Contact
Email me at denis.gorod@gmail.com, or use the form below — I’m always glad to talk research, teaching, or collaboration.