en.wikipedia.org/wiki/John_Wallis

John Wallis (23 November 1616 – 28 October 1703) was an English
mathematician who is ... analysis of infinite series. In his Opera Mathematica I (
1695) Wallis introduced the term "continu...

www.britannica.com/biography/John-Wallis

Wallis learned Latin, Greek, Hebrew, logic, and arithmetic during his early school
years. ... thus he did not follow Cavalieri's geometric approach and instead
assigned numerical values to ... He invented and introduced the symbol ∞ for
infinity.

www.encyclopedia.com/topic/John_Wallis.aspx

Here he also first introduced the sign for infinity and used 1/∞ to represent, .... as
Wallis himself emphasized and partly because it did not suit the taste of ...

www.encyclopedia.com/topic/infinity.aspx

Get information, facts, and pictures about infinity at Encyclopedia.com. ... John
Wallis (1616–1703) suggested the use of ∞ as the symbol for infinity in 1655. ... (
the middle equation of the three above) in which something times 0 does not give
0! .... The scientists who introduced ideal elements at infinity in geometry in the ...

www.math.tamu.edu/~dallen/history/infinity.pdf

time, introduces the ideas of the infinitesimal and the infinite process. In this spirit
... Curiously, the prospect of time having no beginning did not perplex the. Greeks
.... John Wallis (1616-1703), arguably the most important mathematician in 17.

www.amazon.com/Everything-More-Compact-History-Infinity/dp/0393339289

Buy Everything and More: A Compact History of Infinity on Amazon.com ✓ FREE
SHIPPING on ... David Foster Wallace (Author), Neal Stephenson (Introduction)
..... abound) and too much else is expressed, formally, in arcane mathematical
notation. ... The librarian who sent back the book did a disservice to some
readers.

www-groups.dcs.st-and.ac.uk/~history/Biographies/Wallis.html

Biography of John Wallis (1616-1703) ... best schools of the time, so Wallis did
not come in contact with that topic at school. ... The second, closely associated
with the beginnings of the Royal Society and ... He studied the works of Kepler,
Cavalieri, Roberval, Torricelli and Descartes, and then introduced ideas of the
calculus ...

www.robertnowlan.com/pdfs/Wallis, John.pdf

introducing to represent infinity. Born at Ashford in ... Wallis did not encounter the
subject until the Christmas holidays of 1631 when his elder brother taught ...
yearly date for Easter, Wallis opposed the introduction of the Gregorian calendar.

www.pi314.net/eng/wallis.php

Quite precocious, he turns towards the mathematics at 15, but does not completly
forget ... He is the first to use infinity properly (the famous symbol is one of his
creation), ... In modern notation, let us introduce the equivalent integrals (change
of ...

www.storyofmathematics.com/17th.html

Napier also improved Simon Stevin's decimal notation and popularized the use
of ... The Englishman John Wallis, who systematized and extended the methods
of ... the idea of the number line, introducing the symbol ∞ for infinity and the term
...