By Pogorelov, although his publicly available works (at the time of Cheng and Yau's work) had lacked some significant detail
Text from Wikipedia, available under CC BY-SA 4.0.
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By Pogorelov, although his publicly available works (at the time of Cheng and Yau's work) had lacked some significant detail
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-18 from Wikipedia. The archived copy is preserved so this citation survives link rot.