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- Path: sparky!uunet!dtix!darwin.sura.net!mojo.eng.umd.edu!mimsy!afterlife!rlward1
- From: rlward1@afterlife.ncsc.mil (Robert Ward)
- Newsgroups: sci.math
- Subject: Diophantine Equation Solution
- Message-ID: <1992Dec29.182231.20568@afterlife.ncsc.mil>
- Date: 29 Dec 92 18:22:31 GMT
- Sender: rlward1@afterlife.ncsc.mil (Robert L. Ward)
- Followup-To: sci.math
- Distribution: usa
- Organization: National Computer Security Center
- Lines: 10
-
- This is in reply to a question from John Rickert, who asked for solutions
- to Diophantine equation 19 u^3 - 18 v^3 = 1 and similar equations.
-
- See Theorem 6, page 225, "Diophantine Equations," by L. J. Mordell. This
- states (among other things) that the equations a x^3 + b y^3 = 1 have AT
- MOST ONE SOLUTION. Since with a = 19 and b = 18 we have the solution
- x = u = 1, y = -v = -1, this solution is the only one.
-
- Robert L. Ward
- rlward1@afterlife.ncsc.mil
-