Ferdinand Lindemann.
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pi is a Transcendental Number.
Basically, a number is transcendental if it isn't the solution of a polynomial equation. An example would be PI.
No, it is irrational. Furthermore, it is transcendental.
π is a transcendental number which is defined to be the ratio between the diameter and circumference of any circle. (A transcendental number is a number which is not a root of a non-zero polynomial with rational coefficients.)
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Ferdinand Lindemann.
Ferdinand von Lindemann
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Ferdinand Lindemann.
The German mathematician Ferdinand von Lindemann.
From Wikipedia: "In 1882, German mathematician Ferdinand von Lindemann proved that π is transcendental, confirming a conjecture made by both Legendre and Euler"
Charles Hermite, 1822-1901, was the French mathematician who laid the foundation for German mathematician Ferdinand Lindemann to prove that pi is a transcendental number.
Charles Hermite was the 19th century French mathematician who developed the method to prove that pi is a transcendental number.
Ferdinand von Lindemann, along with his colleague Karl Weierstrass
Since pi is transcendental, pi2 is also transcendental. So pi is the square root of the transcendental number pi2.
Hermite proved that "e" is transcendental, but it was Ferdinand Lindemann who proved that "pi" is transcendental.