Cannon Seminar: Fall
2026/Winter 2027
Fall 2026
Seminars will be on Mondays at 4:00 pm - 4:50
pm in 225 TMCB. If you would like to participate,
please email Dr. Kent.
*-speakers to be confirmed.
Monday, Sept 14, 2026
Curtis Kent (Brigham Young University)
Title: Disjointly tree-graded spaces.
Abstract: We will define disjointly tree-graded spaces, which is a special case of a more general construction of Drutu-Sapir. We will then discuss their fundamental groups and show how they can be used to build pi_1-injective maps.
Monday, Sept 21, 2026
Greg Conner (Brigham Young University)
Title: P-adics.
Abstract:
Wednesday, Sept 28, 2025
Logan Kennedy(Brigham
Young University)
Title: Shape Theory and Stong Shape Theory
Abstract: Homotopy Theory is one of the fundamental tools of Algebraic Topology. Homotopy Theory allows for the construction of algebraic invariants that describe topological properties through algebraic structures. While an extremely successful and useful tool, it is limited in its ability to describe spaces that are not homotopy equivalent to CW-complexes. Shape theory and Strong shape theory extend the notion of homotopy theory to spaces that are locally non-trivial. We explore the standard constructions of Shape Theory and Strong Shape Theory, their fruitful algebraic invariants, and how they relate to one another and to standard algebraic invariants of spaces.
Monday, Oct 5, 2026
Mark Hughes (Brigham Young University)
Title: A knotted projective plane that can't be reduced
Abstract: One way to construct a knotted projective plane in the 4-sphere is to take the connected sum of a standard projective plane with a knotted 2-sphere. A longstanding conjecture of Kinoshita asserts that every knotted projective plane can be obtained in this way. I will describe a counterexample, constructed from a classical knot and a braid, and explain how the peripheral subgroup of its complement provides an obstruction to this decomposition. The construction also yields a knotted Klein bottle answering a related question. The talk will discuss the geometry of the construction and the main ideas of the proof. This is joint work with Seungwon Kim, Maggie Miller, and Gheehyun Nahm.
Monday, Oct 12, 2026
Adam Call (Brigham Young University)
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Monday, Oct 20, 2026
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Wednesday, Oct 26, 2026
Tyler Evans (Brigham Young University)
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Monday, Nov 2, 2026
Jospeh James (Brigham Young University)
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Monday, Nov 9, 2026
Stephen Humphries (Brigham Young University)
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Monday, Nov 16, 2026
Abram Magleby (Brigham Young University)
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Monday, Nov 23, 2026
Thanksgiving break
Monday, Nov 30, 2026
Max Beesley (Brigham Young University)
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Monday, Dec 7, 2025
Davi Obata(Brigham Young University)
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Winter 2026
Seminars will be on Mondays at 4:00 pm - 4:50
pm in 225 TMCB. If you would like to participate,
please email Dr. Kent.
*-speakers to be confirmed.
Monday, Jan 18, 2027
TBD ()
Title:
Abstract: