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https://en.wikiquote.org/wiki/Georg_Cantor

In mathematics the art of asking questions is more valuable than solving problems.

Doctoral thesis (1867); variant translation:
In mathematics the art of proposing a question must be held of higher value than solving it.


Georg Ferdinand Ludwig Philipp Cantor
(March 3 [O.S. February 19] 1845 โ€“ January 6, 1918[1])
was a German mathematician.

He created set theory, which has become a fundamental theory in mathematics.
Cantor established the importance of one-to-one correspondence
between the members of two sets,
defined infinite and well-ordered sets, and
proved that the real numbers are more numerous than the natural numbers.

In fact, Cantor's method of proof of this theorem implies
the existence of an infinity of infinities.

He defined the cardinal and ordinal numbers and their arithmetic.
Cantor's work is of great philosophical interest, a fact he was well aware of.[2]

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