https://openreview.net/forum?id=D8WJ7gQEG1
Sion's Minimax Theorem in Geodesic Metric Spaces and a Riemannian Extragradient Algorithm |...
Deciding whether saddle points exist or are approximable for nonconvex-nonconcave problems is usually intractable. We take a step toward understanding a broad...
sion s minimax theorem