# Robert Daniel Carmichael

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**Robert Daniel Carmichael** (1879-1967) was a leading American mathematician. Carmichael was born in Goodwater, Alabama. He attended Lineville College, receiving his B.A. in 1898, while working towards his Ph. D at Princeton University, which he received in 1911. His thesis was written under G.D. Birkhoff and is considered the first significant American contribution to differential equations. He then taught at Indiana University from 1911 to 1915, and at the University of Illinois from 1915 until 1947. Carmichael is best known for his work on what are now known as Carmichael numbers.

## See also

de:Robert Daniel Carmichael fr:Robert Daniel Carmichaël zh:羅伯特·丹尼·卡邁克爾