Question

Irrational numbers and history of irrational numbers

Answer 1

Answer:

the endless number is called irrational number

Answer 2

The discovery of irrational numbers is usually attributed to Pythagoras, more specifically to the Pythagorean Hippasus of Metapontum, who produced a (most likely geometrical) proof of the irrationality of the square root of 2. From an encyclopedia entry for "Irrational number" at TheFreeDictionary.com.