To a nonmathematician, having the letter “i” represent a number that does not quite exist and is “imaginary” can be hard to ...

Pi Day is Friday, March 14. The relatively new holiday is a celebration of the mathematical calculation pi, or the infinite number representing the constant ratio of a circle’s circumference to its ...

give rise to an equation known as the Euler equation (named after physicist, astronomer and polymath Leonhard Euler 1707–1783 ...

Although commonly associated with and named after Swiss mathematician Leonhard Euler, it was first discovered in 1683 by mathematician Jacob Bernoulli. He was trying to determine how wealth would ...

More by Leonhard Euler This article was originally published with the title “ Leonhard Euler and the Koenigsberg Bridges ” in Scientific American Magazine Vol. 189 No. 1 ( July 1953 ) , p. 66 ...

Alexander Euler, a descendant of Leonhard Euler, one of the fathers of modern mathematics, does not want to be drafted into the Russian army - but Switzerland has refused to grant him asylum.

Swiss polymath Leonhard Euler later adopted the single-letter form, beginning with his 1727 Essay Explaining the Properties of Air. Everywhere there's a circle or a spiral, you can find pi.