Jarosław Przygódzki » Proof of the Riemann hypothesis

A mathematician has been invited to speak at a conference. His talk is announced as

Proof of the Riemann hypothesis.
When the conference actually takes place, he speaks about something completely different.
After his talk, a colleague asks him: “Did you find an error in your proof?”
He replies: “No - I never had one.”
“But why did you make this announcement?”
“That’s my standard precaution - in case I die on my way to the conference…”


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