Nonstandard finite element de Rham complexes on cubical meshes
Gillette, A
Hu, K
Zhang, S
(12 Apr 2018)
doi:10.48550/arxiv.1804.04390
Convergence of a $B$-$E$ based finite element method for MHD models on Lipschitz domains
Hu, K
Qiu, W
Shi, K
(02 May 2019)
doi:10.48550/arxiv.1711.11330
Complexes from complexes
Arnold, D
Hu, K
(26 Jan 2021)
doi:10.48550/arxiv.2005.12437
Helicity-conservative finite element discretization for incompressible MHD systems
Hu, K
Lee, Y
Xu, J
(07 Mar 2021)
doi:10.48550/arxiv.2007.07516
BGG sequences with weak regularity and applications
Čap, A
Hu, K
(19 Jan 2023)
doi:10.48550/arxiv.2203.01300
A 2-complex containing Sobolev spaces of matrix fields
Gopalakrishnan, J
Hu, K
Schöberl, J
(16 Jul 2025)
doi:10.48550/arxiv.2507.11869
Design and analysis of twisted and BGG Stokes-de Rham polytopal complexes
Di Pietro, D
Droniou, J
Hu, K
Leroy, A
(23 Jul 2025)
doi:10.48550/arxiv.2507.17333
Seeking SOTA: Time-Series Forecasting Must Adopt Taxonomy-Specific Evaluation to Dispel Illusory Gains
Saqur, R
Bergmeir, C
Horvath, B
Schmidt, D
Rudzicz, F
Lyons, T
(16 Mar 2026)
Some comments on the Butler-Volmer equation for modeling Lithium-ion batteries
Ramos, A
Please, C
(19 Mar 2015)
doi:10.48550/arxiv.1503.05912
Mon, 11 May 2026
14:00 -
15:00
Lecture Room 3
Smooth, globally Polyak-Łojasiewicz functions are nonlinear least-squares
Associate Professor Nicolas Boumal
(École Polytechnique Fédérale de Lausanne - EPFL)
Abstract
Associate Professor Nicolas Boumal will talk about: 'Smooth, globally Polyak-Łojasiewicz functions are nonlinear least-squares'
Polyak-Łojasiewicz (PŁ) functions abound in the literature, especially in nonconvex optimization. When they are also smooth, they become surprisingly simple---with an exotic twist. The plan is for us to discover the structure of those functions and of their sets of minimizers via gradient flow and fiber bundles.
Joint work with Christopher Criscitiello and Quentin Rebjock.