Cardano's formula - Cardano's formula

Japanese: カルダーノの公式 - かるだーののこうしき
Cardano's formula - Cardano's formula

…But neither of them made their secrets public. Cardano, on the other hand, using only a slight hint from Tartaglia, discovered a general solution to cubic equations, now called Cardano's formula, and proved it geometrically. He also systematically reconsidered traditional algebra and derived its various basic properties. These groundbreaking results, along with the solution to quartic equations obtained by his student L. Ferrari, were published in 1545 as "Artes dei Grund", and became a major driving force for the formation of modern algebra. …

*Some of the terminology explanations that refer to "Cardano's Formula" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…しかし彼らはいずれもその秘密を公開することはなかった。これに対してカルダーノは,タルターリアから得たわずかな示唆を手掛りにして,今日〈カルダーノの公式〉と呼ばれる3次方程式の一般的解法を見いだし,それを幾何学的に証明するとともに,従来の代数学を体系的に再考察し,そのさまざまな基本的性質を導出した。これらの画期的な成果は,彼の弟子L.フェラリの得た4次方程式の解法とともに1545年に《大技法》として出版され,近代的な代数学形成のための大きな原動力となった。…

※「カルダーノの公式」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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