John Casey (mathematician)
John Casey (12 May 1820, Kilkenny, Ireland – 3 January 1891, Dublin) was a respected Irish geometer. He is most famous for Casey's theorem on a circle that is tangent to four other circles, an extension of the problem of Apollonius. However, he contributed several novel proofs and perspectives on Euclidean geometry. He and Émile Lemoine are considered to be the co-founders of the modern geometry of the circle and the triangle.
Read more about John Casey (mathematician): Biography, Honours and Awards, Major Works
Famous quotes containing the words john and/or casey:
“I do not wish to see John ever again,—I mean him who is dead,—but that other, whom only he would have wished to see, or to be, of whom he was the imperfect representative. For we are not what we are, nor do we treat or esteem each other for such, but for what we are capable of being.”
—Henry David Thoreau (1817–1862)
“I pass the test that says a man who isn’t a socialist at 20 has no heart, and a man who is a socialist at 40 has no head.”
—William Casey (1913–1987)