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- Newsgroups: sci.math
- Subject: Re: ALGEBRAIC NUMBER ARITHMETIC
- Message-ID: <a_rubin.712514387@dn66>
- From: a_rubin@dsg4.dse.beckman.com (Arthur Rubin)
- Date: 30 Jul 92 16:39:47 GMT
- References: <aet.712408532@munagin> <a_rubin.712513261@dn66>
- Keywords: algebraic numbers arithmetic
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- Lines: 25
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- In <a_rubin.712513261@dn66> a_rubin@dsg4.dse.beckman.com (Arthur Rubin) writes:
-
- Yep, talking to myself again.
-
- >If you want to perform arithmetic on algebraic reals, the result from
- >mathematical logical the Th(R) is decidable should allow you to compute
- >using representations as you suggest.
-
- Th(R) (as an ordered field) is decidable and admits elimination of
- quantifiers, so there is a way a to do computations on a similar algebraic
- structure, but it might have:
-
- x^4 -2 = 0
- x^2+x-1 >= 0
-
- rather than:
-
- x^4 - 2 = 0
- x >= 0
-
- --
- Arthur L. Rubin: a_rubin@dsg4.dse.beckman.com (work) Beckman Instruments/Brea
- 216-5888@mcimail.com 70707.453@compuserve.com arthur@pnet01.cts.com (personal)
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