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- Newsgroups: sci.math
- Path: sparky!uunet!utcsri!torn!watserv2.uwaterloo.ca!watmath!undergrad.math.waterloo.edu!zeno30.math.UWaterloo.ca!kekamins
- From: kekamins@zeno30.math.UWaterloo.ca (kekaminsky)
- Subject: Re: Philosophy of Pi
- Message-ID: <Bz7pG6.vI@undergrad.math.waterloo.edu>
- Sender: news@undergrad.math.waterloo.edu
- Organization: University of Waterloo
- References: <1992Dec11.200538.928@CSD-NewsHost.Stanford.EDU> <1992Dec12.020752.6844@netcom.com> <1gd4dbINNm9q@gambier.rick.cs.ubc.ca>
- Date: Sun, 13 Dec 1992 19:14:29 GMT
- Lines: 29
-
- In article <1gd4dbINNm9q@gambier.rick.cs.ubc.ca> t4d192@rick.cs.ubc.ca (Bruce Paul Dow) writes:
- >
- >Of course, I have seen the Taylor series proof of Euler's
- >identity but I can't seem to pull any intuitive feeling out
- >of it. It seems to me as well that having proved Euler's
- >identity, you then have a strong link between e and Pi.
- >Is this not so? I was wondering whether anyone knew how strong
- >this link might be and whether we can express e and Pi in terms
- >of each other in any useful way?
- >
-
- YESSSSS!!!!! exp(i*Pi) + 1 = 0
- is perhaps the most beautiful identity in mathematics, and it follows
- directly from Euler's identity.
-
- The equation links the two most important transcendentals, the 'enigmatic' i
- and of course of paramount importance 0 and 1, the basis of number.
-
- As for 'intuitionalisms ' regarding the identity, think back to ordinary differential equations,
- in particular, second order constant coefficient ones (ie. the nice easy ones).
-
- Look at y''+y=0 and y''-y=0, as well as the mixed case, and think of the physical circumstances
- under which these arise- SHM, RC circuits (or LC, or RL I can't remember). Then look at the power
- series soltns., or in particular the characteristic eqn. for y''+y=0 which as +-i as roots.
-
- Hope this helps.
-
- Kirk
-
-