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Randomness, Invariants, and Complexity
Program
Complexity and Linear Algebra
Location
Calvin Lab auditorium
Date
Monday, Nov. 17
–
Friday, Nov. 21, 2025
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Workshop & Symposia
Schedule | Randomness, Invariants, and Complexity
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The Workshop
Schedule
Videos
All talks listed in Pacific Time. Schedule subject to change.
Monday, Nov. 17, 2025
8:30
–
9 a.m.
Coffee and Check-In
9
–
9:30 a.m.
Welcome and Introduction to the Workshop
9:30
–
10:30 a.m.
An introduction to geodesically convex optimization, with a focus on complexity of algorithms
Chris Criscitiello (University of Pennsylvania)
Video
10:30
–
10:45 a.m.
Break
10:45
–
11:45 a.m.
Tensor ranks: from asymptotic spectrum duality to quantum functionals and moment polytopes
Jeroen Zuiddam (University of Amsterdam)
Video
11:45 a.m.
–
12:15 p.m.
Working Groups
12:15
–
2 p.m.
Lunch (on your own)
2
–
3 p.m.
Applications of Stability in Invariant Theory
Harm Derksen (Northeastern University)
Video
3
–
4 p.m.
Proving rapid global convergence for the shifted QR algorithm
Jorge Garza Vargas (Princeton University)
Video
4
–
5 p.m.
Reception
Tuesday, Nov. 18, 2025
8:30
–
9 a.m.
Coffee and Check-In
9
–
10 a.m.
Weingarten calculus: the basics
Jonathan Novak (UC San Diego)
Video
10
–
10:45 a.m.
Weingarten calculus: recent developments.
Benoit Collins (Kyoto University)
Video
10:45
–
11:15 a.m.
Break
11:15 a.m.
–
12:15 p.m.
Working Groups
12:15
–
1:45 p.m.
Lunch (on your own)
1:45
–
2:30 p.m.
Randomized Numerical Linear Algebra: Highlights and Future Directions
Christopher Musco (New York University)
Video
2:30
–
3:15 p.m.
Applications of Moment Polytopes in Quantum Chemistry
Julia Liebert (Princeton University)
Video
3:15
–
3:45 p.m.
Break
3:45
–
4:30 p.m.
Algebraic techniques for machine learning models
Soledad Villar (Johns Hopkins University)
Video
Wednesday, Nov. 19, 2025
8:30
–
9 a.m.
Coffee and Check-In
9
–
10 a.m.
Generalized gradient flows in Hadamard manifolds and convex optimization on entanglement polytopes
Hiroshi Hirai (Nagoya University)
Video
10
–
10:45 a.m.
The Tensor as a (Quantum) Informational Resource
Matthias Christandl (University of Copenhagen)
Video
10:45
–
11:15 a.m.
Break
11:15 a.m.
–
12:15 p.m.
Working Groups
12:15
–
1:45 p.m.
Lunch (on your own)
1:45
–
2:30 p.m.
Self-concordant Schrödinger operators
Sander Gribling (Tilburg University)
Video
2:30
–
3:15 p.m.
Subgradient-style algorithms in nonpositively-curved metric spaces
Adriana Nicolae (Babeș-Bolyai University)
Video
3:15
–
3:45 p.m.
Break
3:45
–
4:30 p.m.
Covering numbers of real algebraic varieties and some computational applications
Joe Kileel (University of Texas at Austin)
Video
Thursday, Nov. 20, 2025
8:30
–
9 a.m.
Coffee and Check-In
9
–
10 a.m.
On the Complexities of Tensor Isomorphism Problems
Youming Qiao (University of Technology, Sydney)
Video
10
–
10:45 a.m.
Some New Results in Quantum State Learning
John Wright (UC Berkeley)
Video
10:45
–
11:15 a.m.
Break
11:15 a.m.
–
12:15 p.m.
Working Groups
12:15
–
1:45 p.m.
Lunch (on your own)
1:45
–
2:30 p.m.
Classical versus quantum complexity of multiplicities
Greta Panova (University of Southern California)
Video
2:30
–
3:15 p.m.
Fenchel Duality on Hadamard Manifolds
Mauricio Silva Louzeiro (UF Goias)
Video
3:15
–
3:45 p.m.
Break
4
–
5 p.m.
(Offsite at 60 Evans Hall) Mathematics Department Colloquium: Positive random walks and positive-semidefinite random matrices
Joel Tropp (Caltech)
Friday, Nov. 21, 2025
8:30
–
9 a.m.
Coffee and Check-In
9
–
10 a.m.
Quantum max flow for simple tensor networks
Ion Nechita (CNRS, LPT Toulouse)
Video
10
–
10:45 a.m.
Sections as a computational tool in invariant theory
Evelyne Hubert (INRIA Sophia Antipolis)
Video
10:45
–
11:15 a.m.
Break
11:15 a.m.
–
12:15 p.m.
Complexity of Robust Orbit Problems for Torus Actions and the abc-conjecture
Levent Dogan (Ruhr University Bochum)
Video
12:15
–
1:45 p.m.
Lunch (on your own)
1:45
–
3:30 p.m.
Informal Discussions & Wrap Up
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