注目の話題: 子供に甘える父親; フリーターについて; 30代。自分の老いを受け入れられない。

Science,English,and math Ⅱ

No.28　17/04/15 08:57
燻し銀三 ( 50代 ♂ Oe38xe ) あ+あ-

【Mechanism of number】

《The concept which starts from counting something》

The concept which starts from the natural number leads to the discovery of zero and introduction of minus number,and integral numbers are 整数 completed. Dividing something into some parts expands to rational numbers. The rational number means the a fractional number of which both denominator 分母 and numerator 分母 are composed with the integral number.

Irrational number which is an answer of a square root 平方根 is added to the rational number,and real number is
completed,but the announcement of the irrational number has been restrained for a while,for some mathematician like Pythagoras found hard that other people accepted the concept of the irrational number.It seemed that they were conscious that the irrational number was something unnatural as its name is indicated.

Imaginary numbers 虚数 are added to the real numbers,and the expansion of the number comes to an end for the time being,but its process …