that pi is irrational
The first proof of the irrationality of Pi was done by J.H. Lambert in 1768
There were beliefs for pi being irrational since the 9th century. However, the first proof was given in 1768 by Johann Heinrich Lambert.
Johann Lambert proved that pi is irrational in 1761.
lindeman
Ferdinand Lindemann.
Ferdinand Lindemann.
Ferdinand von Lindemann.
Johann Lambert proved that pi is irrational in 1761.
Johann Lambert
Johann Heinrich Lambert is credited with the first proof that pi is irrational in 1768.
Lambert.