A slight deviance from the normal format. What common characteristic do all of the following great mathematicians share:

Leonhard Euler

Nicholas Saunderson

Lev Pontryagin

Alfred Loewy

W.G. Bickley

Bernard Morin

Joseph Plateau

These clues are designed for students to use as they try to figure out the identity of the mystery
mathematician. Based on a weekly cycle, the suggested approach is for a teacher to give students one new clue per day. The following week, the mathematician's name, photo,
and further information will be available in the
archive.