Believed that he had found a proof of the Poincaré conjecture, but Tietze found an error
Text from Wikipedia, available under CC BY-SA 4.0.
- #wikipedia
- #event
Believed that he had found a proof of the Poincaré conjecture, but Tietze found an error
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-24 from Wikipedia. The archived copy is preserved so this citation survives link rot.