The story
Named after Cesare Burali-Forti, who in 1897 published a paper proving a theorem which, unknown to him, contradicted a previously proved result by Georg Cantor.
Etymology from Wiktionary, CC BY-SA 4.0.
Burali-Forti paradox
Today it means: The paradox that supposing the existence of a set of all ordinal numbers leads to a contradiction; construed as meaning that it is not a properly defined set. Full definition →