Leonhard Euler was a renowned 18th century Swiss mathematician and physicist. He was described by François Arago as calculating "like men breathe, like eagles sustain themselves in the air" - meaning that mathematical calculations came to Euler as easily and naturally as breathing or flying comes to people and eagles. Some key facts about Euler include that he worked at the Science Academy of Prussia, lost sight in one eye from his mathematical studies, and made numerous seminal contributions across many fields of mathematics during his career.

1. LEONHARD EULER
"EULER CALCULAIT SANS AUCUN EFFORT APPARENT,
COMME LES HOMMES RESPIRENT, COMME LES AIGLES SE
SOUTIENNENT DANS LES AIRS."

2. "Euler calculait sans aucun effort apparent,
comme les hommes respirent, comme les aigles
se soutiennent dans les airs."
Dominique François Jean Arago ≪Condorcet≫
1841
「彼の人は何でもない体で自然に計算をした――まるで人が息するように、
鷲が空に留まるように」
フランス学士院会員のフランソワ・アラゴ、『コンドルセ』にてオイラーを評して

3. ABOUT LEONHARD EULER
Leonhard Euler
[1707/4/15-1783/9/7]
Born: Basel,Switzerland
Field: Mathematics and physics
Alma matter:
University of Basel

4. Period Description
1707 Born at Basal,Switzerland
1727 Find employment at Science Academy
1733 Merry when he was 26 years old
1735
Lost the eyesight in right eye as a result of studying mathematics without
Sleep
1741~1766 Become a member of Prussian Academy of Sciences and migrate to Germany
1771 Lost the eyesight completely but continue writing papers by dictation
1786 Died at the age of 76 years old
The chronology of Leonhard Euler

5. Euler's identity

6. Euler's identity is most beautiful formula in the worlds
It is certainly beautiful. Much likely fainted too beauty.
But,I think there is no need to bother the calculation if the answer is zero
But , say some people do this
Oshino ohgi
However , it is different

7. Beauty of Euler's identity lies in that the
answer is zero
For that reason…
It is purposely migrate the formula

8. Beauty of Euler's identity
Important natural
logarithm in algebra
field
「e」
Important in the
multiple elements
field
「i」
In important
trigonometric
functions
「π」
In important
mathematics in
general
「0」「1」
That contains all ...
Euler's identity

9. Many of the achievements of Leonhard Euler
Euler diagram
Euler number
Euler's formula
Euler's constant
Euler's theorem
Euler characteristic
Euler's method and more…

10. Thank you for listening!

11. Leonhard Eulerレオンハルト・オイラー数理科学科 4686 吉澤萌
http://ist.ksc.kwansei.ac.jp/~nishitani/?c=plugin;plugin=attach_download;p=FavoriteMathematician14List;file_name=4686.tex.pdf
レオンハルト・オイラー – Wikipedia
https://ja.m.wikipedia.org/wiki/%E3%83%AC%E3%82%AA%E3%83%B3%E3%83%8F%E3%83%AB%E3%83%88%E3%83%
BB%E3%82%AA%E3%82%A4%E3%83%A9%E3%83%BC
オイラーの公式 e・π i =-1 という式を先生が教えてくれました。_ Yahoo!知恵袋
http://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q10104464840
【終物語】第1話 感想 数学は時に暴力… _ あにこ便
http://anicobin.ldblog.jp/archives/46474545.html
引用、参考元