This site is supported by donations to The OEIS Foundation.

# Ferdinand von Lindemann

Carl Louis Ferdinand von Lindemann (1852—1939) German mathematician. In the late 19th century, Lindemann proved that ${\displaystyle e}$ and ${\displaystyle \pi }$ are transcendental numbers; his proof of the latter is based on Euler's identity ${\displaystyle e^{i\pi }=-1}$.