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December 6th, 2017, 08:16 PM  #1 
Senior Member Joined: Nov 2011 Posts: 175 Thanks: 2  A riddle
I wrote 868 books and articles. I was blind. I work on useful math and pure math. Who am I?

December 6th, 2017, 08:41 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 18,595 Thanks: 1493 
Leonhard Euler

December 6th, 2017, 08:42 PM  #3 
Senior Member Joined: Nov 2011 Posts: 175 Thanks: 2  Yes.
Yes.

December 6th, 2017, 08:48 PM  #4 
Senior Member Joined: Nov 2011 Posts: 175 Thanks: 2  riddle number 2 on Euler
Who is the person that argument with Euler about the existence of god?

December 7th, 2017, 04:25 AM  #5 
Global Moderator Joined: Dec 2006 Posts: 18,595 Thanks: 1493 
Allegedly, Denis Diderot.

December 7th, 2017, 04:28 AM  #6 
Senior Member Joined: Nov 2011 Posts: 175 Thanks: 2  riddle number 3 on Euler
Right! Who said "Read Euler, read Euler, he is our master in everything"? 
December 7th, 2017, 09:58 AM  #7 
Global Moderator Joined: Dec 2006 Posts: 18,595 Thanks: 1493 
It was written (in French) by PierreSimon Laplace.

December 7th, 2017, 10:29 AM  #8 
Senior Member Joined: Nov 2011 Posts: 175 Thanks: 2  riddle number 4 on Euler
Right! What Euler enquire and understand from it that there are differential equations that to solve them you should use trigonometric function? Last edited by skipjack; December 7th, 2017 at 12:49 PM. 
December 7th, 2017, 12:49 PM  #9 
Global Moderator Joined: Dec 2006 Posts: 18,595 Thanks: 1493 
I don't understand that question.

December 8th, 2017, 05:34 AM  #10 
Senior Member Joined: Nov 2011 Posts: 175 Thanks: 2  hint
Hint: connected to music...


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