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john wallis
John Wallis, who is also credited with several trigonometry contributions, invented the number line in 1695. By so doing, he helped people understand negative numbers better.
The English mathematician John Wallis (1616 - 1703).
The English mathematician John Wallis (1616 - 1703).
A zillion means infinite millions and the symbol for infinity looks like an elongated 8 on its side. The symbol was introduced by the English mathematician John Wallis in 1655 who derived it from the Roman numeral (I) which also meant myriad (countless numbers)