Prime number theorem

Japanese: 素数定理 - そすうていり(英語表記)prime number theorem
Prime number theorem
If the number of prime numbers not exceeding a natural number x is represented by π( x ), then when x is large, π( x ) is given by x / log x , and the desired approximation approaches the true value as x becomes larger; in other words, when x →∞, the ratio of π( x ) to x / log x approaches 1. This is called the Prime Number Theorem. Since C. F. Gauss predicted this as a boy, it remained a major issue throughout the 19th century. P. Chebyshev was the first to show in the 1850s that the ratio between the two was bounded both above and below, but the final proof was given by J. Hadamard and Belgian mathematician C. de la Vallee-Poussin at almost the same time (1896) and using almost the same method.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
自然数 x をこえない素数の個数を π(x) で表わすと,π(x) は x が大きければ x/ log x によって与えられ,求められる近似値は x が大きくなるほどより真の値に近づく,言い換えれば,π(x) は x→∞ のとき,x/ log x との比が1に近づく。これを素数定理という。これは,C.F.ガウスが少年の頃に予測してから,19世紀を通じて大きな課題になっていた。これについては,1850年代に P.チェビシェフが初めて両者の比が上下に有界なことを示したが,最終的な証明は,J.アダマールとベルギーの数学者 C.ド・ラ・バレ=プーサンによって,ほとんど同時に (1896) ,ほとんど同じ方法でなされた。

出典 ブリタニカ国際大百科事典 小項目事典ブリタニカ国際大百科事典 小項目事典について 情報

<<:  Zosterophyllum

>>:  Prime number - sosuu (English spelling) prime number

Recommend

Castel Gandolfo (English spelling)

A town in the province of Rome in the Lazio region...

Domenico Cimarosa

Italian composer. Born in Aversa near Naples. Stu...

Beneš, Edvard

Born: May 28, 1884 in Kozlany, Austria-Hungary Die...

Orphan of the Storm - Stormbringer

...The plan to remake "Fading Flowers" ...

Jizo - Jizo

One of the Buddhist bodhisattvas. Abbreviation of ...

Collocalia gigas (English spelling)

…[Yasuo Uchida]. … *Some of the terminology that ...

Grassland - Sochi

Land used primarily for grazing livestock or for h...

Keeping, C. - Keeping

…What is particularly noteworthy about the UK is ...

Stationery - Bunbougu

The utensils for a study (bunbou). Also called st...

active placebo

…Of these, the double-blind trial is currently co...

McKay, HD (English spelling) McKayHD

... American theories of crime and delinquency in...

Zenmui

A monk translator from India. His Sanskrit name i...

Pivotal party - Pivotal party

When a coalition government is formed in a multi-p...

Dermochelyidae

…General term for marine turtles with flattened, ...

August Wilhelm Iffland

German actor and playwright. Born in Hanover. Aft...