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Subject: "Question on CTK article on Regular Polyhedra"     Previous Topic | Next Topic
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Conferences The CTK Exchange This and that Topic #735
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Abi Kirk
guest
 Oct-18-06, 02:04 PM (EST)
 
"Question on CTK article on Regular Polyhedra"
 
   In the cTK article Regular Polyhedra, Alexander Bogomolny discusses Euler's Formula. He remarkds that it was first proved by Descartes in 1639. I would be grateful if he or anyone could give me a reference for this; I haven't been able to find anything on-line about Descartes' proof.
Many thanks, Abi Kirk.


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alexbadmin
Charter Member
1899 posts		 Oct-18-06, 02:21 PM (EST)
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1. "RE: Question on CTK article on Regular Polyhedra"
In response to message #0
 
   The fact is mentioned in


  1. Courant, Robbins What Is Mathematics?, Oxford University Press, 1996, p. 236 (Descartes + date just mentioned)
  2. Lakatos, Proofs and Refutations, Cambridge University Press, 1976, p. 6 (an elaborate foot note that takes more than 1/2 page)


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alexbadmin
Charter Member
1899 posts		 Oct-18-06, 02:26 PM (EST)
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2. "RE: Question on CTK article on Regular Polyhedra"
In response to message #0
 
   https://www.google.com/search?hl=en&q=Descartes+and+Euler+characteristics


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