パンサー尾形貴弘が数学の難問を大真面目に解説する「笑わない数学」。テーマは「虚数」。“２乗するとマイナスになる”不思議な数の謎。虚数は「ありえない数」なのか！？
２乗するとマイナス１になるルートマイナス１。どんな数でも２乗すればプラスになると信じていた数学者たちにとって、「虚数」は受け入れることができない数だった。しかし、天才たちの執念によって、虚数は“想像上の数”ではなく、この世界に欠かせない、とてつもなく重要な数であることが明らかになっていく。自然数に始まり、無理数、ゼロといった数を人類が受け入れてきた歴史とともに、虚数発見に至る壮大な物語を紹介する。
Panther Takahiro Ogata explains difficult mathematical problems in a very serious manner in "Mathematics without Laughing". The theme is "imaginary numbers." The mystery of the mysterious number that "becomes minus when squared." Is an imaginary number an "impossible number"? For mathematicians, who believed that any number could be squared to become a positive number, the "imaginary number" was a number that they could not accept. However, through the persistence of geniuses, imaginary numbers were revealed to be not "imaginary numbers" but incredibly important numbers that are indispensable to this world. This is the spectacular story of how mankind has accepted various numbers throughout history, starting with the natural numbers, then the irrational numbers, and finally zero, leading up to the discovery of imaginary numbers.
