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Friday, September 20, 2019 — 3:30 PM EDT
Title: Undermining key exchange
| Speaker: | Douglas Stebila |
| Affiliation: | University of Waterloo |
| Room: | MC 5501 |
Abstract:
There are many ways to undermine systems that rely on cryptography. An attacker could of course try to find flaws in the hardware and software implementing the system, or find mathematical weaknesses in the cryptographic algorithms.
Wednesday, September 25, 2019 — 2:00 PM EDT
Title: Improving Implementations of CSIDH
| Speaker: | Jason LeGrow |
| Affiliation: | University of Waterloo |
| Room: | MC 5417 |
Abstract:
I will present on some papers related to implementations of CSIDH [1].
Thursday, September 26, 2019 — 1:00 PM EDT
Title: LP bounds and the addition formula
| Speaker: | Chris Godsil |
| Affiliation: | University of Waterloo |
| Room: | MC 5479 |
Abstract:
I will show how we can derive useful bounds on the size of codes and designs, using linear programming and the addition formula.
Thursday, September 26, 2019 — 3:30 PM EDT
Title: Chord diagrams, generating functions, and qft
| Speaker: | Karen Yeats |
| Affiliation: | University of Waterloo |
| Room: | MC 5417 |
Abstract:
I'll talk about some joint work with Julien Courtiel where some nice enumerative combinatorics tells us something about how gauge theories are such special quantum field theories.
Friday, September 27, 2019 — 1:00 PM EDT
Title: Submodular function maximization
| Speaker: | Chaitanya Swamy |
| Affiliation: | University of Waterloo |
| Room: | MC 5501 |
Abstract:
I will give the introductory talk for this term's topic for the Combinatorial-Optimization Reading group, namely submodular function maximization. Submodular functions arise in diverse contexts in combinatorial optimization.
Friday, September 27, 2019 — 3:30 PM EDT
Title: Countable weighted graphs with no unfriendly partitions