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Euler created [[Euler's formula]], a basis for complex analysis.  Euler also laid a foundation for what later became [[combinatorial topology]].

Euler created [[Euler's formula]], a basis for complex analysis.  Euler also laid a foundation for what later became [[combinatorial topology]].

Interestingly, Euler had extraordinary powers of concentration.  He could recite the entire [[Aeneid]] word-for-word.  He could work amid noise and distractions.  He could do phenomenal calculations in his head, which became very useful after he went blind.

Interestingly, Euler had extraordinary powers of concentration.  He could recite the entire [[Aeneid]] word-for-word.  He could work amid noise and distractions.  He could do phenomenal calculations in his head, which became very useful after he went blind in 1766. [http://scienceworld.wolfram.com/biography/Euler.html]

Euler was perhaps the greatest scientist/mathematician that [[Switzerland]] ever produced.

Euler was perhaps the greatest scientist/mathematician that [[Switzerland]] ever produced.

[[Category:Mathematicians|Euler, Leonhard]]

[[Category:Mathematicians|Euler, Leonhard]]