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MathGroup Archive 2004

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Re: Re: Root function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg51061] Re: [mg51033] Re: [mg51009] Root function
  • From: "David Park" <djmp at earthlink.net>
  • Date: Sun, 3 Oct 2004 05:47:29 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Daniel,

What is the "canonical ordering in the complex plane"?

Is it a lexicographic ordering by real and imaginary parts? Or by Abs and
Arg? Or something else?

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/

From: Daniel Lichtblau [mailto:danl at wolfram.com]
To: mathgroup at smc.vnet.net

The Root form is a concise way of expressing algebraic numbers via the
minimal polynomial they satisfy, along with a canonical ordering in the
complex plane (hence those numbers 1-3 in the second field).

Daniel Lichtblau
Wolfram Research




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