Check out Ivan Petrovsky's haircuts throughout his career:
Ivan Petrovsky had a variety of different hairstyles during his lifetime. He was widely celebrated as a world-class mathematician and university teacher. However, the Russian mathematician was mainly known for his unique public appearances and his delightful character. Before his passing at the age of 72 he was frequently talked about in the press because of his marvelous looks. Check out Ivan Petrovsky's former and current looks right here: