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# User:Mike Winkler

### From OeisWiki

Hi, my name is Mike Winkler (aka Tesla Flash). I am a mathematics student (B.Sc.) at the Ruhr-Universität Bochum, Germany. I also work as an independent video game developer at PsyGraph Games.

Research interests are prime numbers, Pi, the Collatz conjecture, magic squares of squares and (4,n)-regular matchstick graphs.

Hobbies: Classical Piano, E-Guitar, Mountainbiking

Some persons I like: Johann Sebastian Bach, Glenn Gould, Slash, Jerome David Salinger, Ian McEwan, Pablo Picasso, Benoît Mandelbrot, Bobby Fischer

Mathematics Homepage: mikewinkler.co.nf

Business Website: PsyGraph Games

arXiv: papers

- In 2010 in found a special tree construction for the Collatz 3x + 1 function which contains only two directions.

- In 2014 I found the first known connection between the Collatz 3x + 1 function and the Fibonacci sequence.

- In 2015 I found the first known formula for generating the number of the stopping time residue classes for the Collatz 3x + 1 function as listed in the OEIS as A100982.

- In 2016/2017 I discovered the currently second and third smallest known 4-regular matchstick graphs with 108* and 114 edges, and the currently smallest known (4,5), (4,6), (4,7) and (4,11)-regular matchstick graphs with 115, 117, 159 and 777* edges. I also discovered the currently smallest known completely asymmetric (4,n)-regular matchstick graphs for n = 4, 5, 6, 7 and 11 with 132, 134, 128, 185 and 777* edges. [ *together with Stefan Vogel and Peter Dinkelacker ]