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en.wikipedia.org/wiki/John_Wallis

John Wallis was an English mathematician who is given partial credit for the development of infinitesimal calculus. Between 1643 and 1689 he served as chief cryptographer for Parliament and, later, the royal court. He is credited with introducing the symbol ∞ for infinity. .... He stated, but did not prove, the corresponding result for a curve of the form y ...

en.wikipedia.org/wiki/Infinity_symbol

The infinity symbol ∞ (sometimes called the lemniscate) is a mathematical symbol representing the concept of infinity. Contents. [hide]. 1 History; 2 Usage; 3 Modern symbolism; 4 Graphic design; 5 Encoding; 6 See also; 7 References. History. John Wallis introduced the infinity symbol to mathematical literature. ... Wallis did not explain his choice of this symbol, but it has been conjectured ...

www.britannica.com/biography/John-Wallis

Mar 15, 2017 ... Wallis' appointment in 1649 as Savilian professor of geometry at the University of Oxford ... thus he did not follow Cavalieri's geometric approach and instead assigned ... He invented and introduced the symbol ∞ for infinity.

Mathematician who developed calculus and who introduced the symbol for ' infinity', ∞. John Wallis, 'the greatest of Newton's precursors in mathematics', did not ...

www.newworldencyclopedia.org/entry/John_Wallis

Oct 5, 2011 ... He is also credited with introducing the symbol ∞ for infinity. ... Christopher Wren, the great English architect and Wallis' colleague in the ... He states, but does not prove, the corresponding result for a curve of the form y = xp/q.

www.famous-mathematicians.com/john-wallis

John Wallis was an English mathematician born on 23rd October 1616 in ... such as introducing the term 'continued fraction' and using the symbol for infinity for ...

www.houseofnames.com/wallace-family-crest

Jun 14, 2017 ... View the Wallace surname, family crest and coat of arms. ... a British mathematician who introduced the infinity symbol, eponym of the asteroid ...

hsm.stackexchange.com/questions/3814/where-did-john-wallis-get-the-idea-for-infty

I read in an offhand comment in Amir Alexander's 2014 book Infinitesimal (p.280), that John Wallis introduced the symbol ∞ for infinity.

www.maths.tcd.ie/pub/HistMath/People/Wallis/RouseBall/RB_Wallis.html

They are notable partly for the introduction of the use of infinite series as an ... work did something to make the method intelligible to all mathematicians: it is the  ...

functions.wolfram.com/Constants/DirectedInfinity/introductions/Symbols/ShowAll.html

The modern mathematical symbol arose with the development of calculus. J. Wallis (1655) introduced the sign ∞ to signify infinite numbers. Subsequently many ...

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