ERDOS

Set to 3 different clues across 3 published puzzles, most often “Mathematician Paul” — The New York Times, Sunday, 12 September 2010.

5 letters

Every clue on record, most used first

Mathematician Paulonce
The New York Times — Sunday, 12 September 2010
Hungarian-born mathematician Paulonce
The New York Times — Friday, 30 April 2004
Mathematician who was the subject of "The Man Who Loved Only Numbers"once
The New York Times — Saturday, 27 December 2003