Brian Hartley was born on May 15 and was famous for his contributions in group theory.
Mathematicians born in January include Lewis Carrol, Alfred Tarski, and Brigas Sande.
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Pentadecagon, although most mathematicians would use "15-gon."
Cahit Arf
All mathematicians seek patterns. These help them to summarise results which may, otherwise, seem unrelated.
Pierre Curie was born on May 15, 1859
Trini Lopez was born on May 15, 1937
Sommore was born on May 15, 1966
1,3,5 &15. Some mathematicians would argue that 1 & 15 are 'trivial' factors of 15 and would only allow the answers 3 & 5.
Rob May was born on 1969-02-15.
L Frank Baum was born on May 15, 1856
Where and when was pythagores born