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- From: nissim@mary.fordham.edu (Leonard J. Nissim)
- Subject: Re: term for the "angle" of a complex number
- References: <C0rFC2.A8@smsc.sony.com>
- Sender: nobody@ctr.columbia.edu
- Organization: Fordham University
- Date: Tue, 12 Jan 1993 21:40:00 GMT
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- Message-ID: <12JAN199317404406@mary.fordham.edu>
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- In article <C0rFC2.A8@smsc.sony.com>, markc@smsc.sony.com (Mark Corscadden) writes...
- >A complex number Z can be expressed in these ways:
- >
- >rectangular - X + Yi where X and Y are real
- >polar - R exp(Ai) where R>=0 and A are real (A is not unique)
- >
- >Terminology for these quantities:
- >
- >X - the real part of Z
- >Y - the imaginary part of Z
- >R - the magnitude of Z or the absolute value of Z
- >A - ??? I have no idea ???
- >
- >What do you call "A"? Ideally this would be a term that you could expect
- >to be recognized in a discussion about quantum field theory, for example.
- >
- >Mark Corscadden
- >markc@smsc.sony.com
- >work: (408)944-4086
-
- Most textbooks (and in particular, "Complex Variables and Applications"
- by Churchill, Brown, and Verhey, which I used the last time I taught it)
- call it:
- the *argument* of Z, abbreviated arg(Z)
- -------------------------------------------------------------------------------
- Leonard J. Nissim (nissim@mary.fordham.edu)
- Disclaimer: "I speak only for myself."
- -------------------------------------------------------------------------------
-