Russian mathematician **Grigori Perelman** proved the Poincaré Conjecture in **7 years** of solitude research in his Russian apartment - same 7 years of solitude forAndrew Wiles (The Fermat’s Last Theorem)in the Cambridge attic house andZhang Yitang 张益唐 (7-Million-Gap Twin Primes) in the “Subway” sandwich kitchen.

7 is the

Perfect Number. 1 week has 7 days, according to the “Book of Genesis”, God created the universe in 6 days and rested “Sabbath” on the beautiful 7th day.

People involved in his journey:

*also had a mother supporting her single son in the entire Mathematical life.*

*unintentionally”*gave him the inspiration of the “Ricci-flow” tool – the first key to the door of The Poincaré Conjecture.

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