Hi, my name is Mike Winkler and I live in Recklinghausen, Germany.
Research interests: 3x + 1 problem, (4; n)-regular matchstick graphs, Diophantine equations, prime numbers, Pi, magic squares of squares.
Hobbies: Classical Piano, E-Guitar, Mountainbiking, Swimming, Painting
Mathematics Homepage: mikewinkler.co.nf
Business Website: PsyGraph Games