Question: In differential geometry, a Nadirashvili surface is an immersed complete bounded minimal surface in R with negative curvature, Eugenio Calabi and Shing-Tung Yau had a question, about whether there was an immersed complete bounded minimal surface in R, Shing-Tung Yau is from Hong Kong and what type of American mathematician?
Sentence (from "Nadirashvili surface"): This simultaneously answered a question of Hadamard about whether there was an immersed complete bounded surface in R with negative curvature, and a question of Eugenio Calabi and Shing-Tung Yau about whether there was an immersed complete bounded minimal surface in R.
Relevant evidence: Yes