Alexander's trick (Q4718108)

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mathematical function

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Language	Label	Description	Also known as
English	Alexander's trick	mathematical function

Statements

instance of

method

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mathematical concept

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has use

Q13424747

of

homeomorphism

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named after

James Waddell Alexander II

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studied in

category theory

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defining formula

${\displaystyle J(x,t)={\begin{cases}tf(x/t),&{\text{if }}0\leq \|x\|<t,\\x,&{\text{if }}t\leq \|x\|\leq 1.\end{cases}}}$

1 reference

imported from Wikimedia project

English Wikipedia

maintained by WikiProject

WikiProject Mathematics

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Identifiers

Freebase ID

/m/086j9f

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Sitelinks

Wikipedia(2 entries)

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• enwiki Alexander's trick
• ruwiki Трюк Александера

Wikibooks(0 entries)

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Wikinews(0 entries)

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Wikiquote(0 entries)

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Wikisource(0 entries)

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Wikiversity(0 entries)

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Wikivoyage(0 entries)

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Wiktionary(0 entries)

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Multilingual sites(0 entries)

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