[過去ﾛｸﾞ] ガロア第一論文と乗数イデアル他関連資料スレ13 (1002ﾚｽ)
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722(2): 現代数学の系譜 雑談 ◆yH25M02vWFhP 02/11(火)19:45 ID:zr+dFWV7(13/15) AAS
つづき

外部ﾘﾝｸ:en.wikipedia.org
Proof that π is irrational
In the 1760s, Johann Heinrich Lambert was the first to prove that the number π is irrational, meaning it cannot be expressed as a fraction
a/b, where
a and b are both integers. In the 19th century, Charles Hermite found a proof that requires no prerequisite knowledge beyond basic calculus. Three simplifications of Hermite's proof are due to Mary Cartwright, Ivan Niven, and Nicolas Bourbaki. Another proof, which is a simplification of Lambert's proof, is due to Miklós Laczkovich. Many of these are proofs by contradiction.
In 1882, Ferdinand von Lindemann proved that
π is not just irrational, but transcendental as well.[1]

Lambert's proof
略

Hermite's proof
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Cartwright's proof
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Niven's proof
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Bourbaki's proof
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Laczkovich's proof
略
以上

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