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Colloquium: Homological stability of moduli spaces
Dan Petersen, Stockholm University
Homological stability has emerged over the past decades as an organizing principle in topology and beyond. Broadly speaking, many sequences...
Colloquium: Randomized algorithms for very large scale linear algebra
Per-Gunnar Martinsson, University of Texas at Austin
The talk will describe how randomized algorithms can effectively, accurately, and reliably solve linear algebraic problems that are...
Colloquium: Intrinsic dual symplectic dynamics in quasiperiodic spectral theory
Svetlana Jitomirskaya, UC Berkeley
Quasiperiodic Schrödinger operators are simple deterministic models of quantum motion that nevertheless exhibit strikingly complicated...
Colloquium: Total positivity: combinatorics, geometry, and representation theory
Xuhua He, University of Hong Kong
An invertible matrix is called totally positive if all of its minors are positive. Over the past several decades, this classical notion has...
