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Bibliographic Details
Main Author: Mourrat, Jean-Christophe
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2602.16517
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Table of Contents:
  • We give an example of a function satisfying a two-sided Polyak-Lojasiewicz condition but for which a gradient descent-ascent flow line fails to converge to the saddle point, circling around it instead. We can even impose the function to be strongly convex in one variable and to satisfy a PL condition in the other variable.