３３ Mathematics #Universe
○How can it be that mathematics, being after all a product of human thought which is independent of experience, is so admirably appropriate to the objects of reality? —Albert Einstein
○Key word：Symmetry 
※Forecast of mathematics：Ｔhose that do not can still prove.
（It is well in the world of mathematics.）
About 7000 years ago Number was born. (Mankind began to group living.)
16th century Imaginary number is accepted.
・・・"Forgetting the mental anguish received with imaginary number, and merely introducing this." Gerolamo Cardano（Italy 1501〜1576）
17th century Minus is accepted in Europe.
・・・Descartes draws a number line. René Descartes（France 1596〜1650）
The first half of the 19th century An imaginary number is denoted by an axis of coordinates.：complex plane Carolus Fridericus Gauss（Germany 1777〜1855）
1935 Gödel's Incompleteness Theorem
・・・Then, Turing(Aan Mathison Turing, UK 1912-1954) proved that there is no unific method of confirming beforehand whether a certain proposition is a proposition which cannot judge truth.
1964 Murray Gell-Mann (1929-)predicted the existence of quarks by the theory of pure mathematics(the group:SU (3)).
20170416 Addition of a photo
20170419 Addition of the words of Einstein