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I was born in 1941 in Italy. I followed 3 years electronic course, and 2 years to get Accounting diploma. All these 5 years as an evening student.I worked in IBM Italy from 1965 to 1995 as hardware technician, department accounting and Office Automation team coordinator.I have no a mathematic degree, I developed my mathematic knowledge alone guided only by it's beauty. I'm not a researcher, I've no produced official matters. I'm considering a mathematic amateur and would like to do a little contribute to others mathematic amateurs. My mathematical interests are around Fundamentals, Logic, Primes, Sequences,