My name is Dimitris Valianatos I am 58 years old, from Greece. I am a programmer and an amateur mathematician. I studied at the University of Athens. I have 2 children, a daughter 25 years, lawyer and a son 24 years, talented pianist studying on a scholarship at the Juilliard School in New York. My wife is a kindergarten teacher in elementary school. I really love the theory of numbers where I spend much of my spare time for several years. Sorry for my bad English.