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The lopped Alexandrov-Koutroufiotis-Nirenberg conjecture for saddle functions
Lopped Alexandrov-Koutroufiotis-Nirenberg conjecture. Any saddle function $v\in C^2(\Sigma^2)$ satisfies
Conjecturerefuteddifferential-geometry saddle-functions spherical-geometryarXiv posted 2 days ago

The lopped Alexandrov-Koutroufiotis-Nirenberg conjecture for saddle functions