Exercise Needed

everything fine there in the article. as an encyclopeadian article. but shouldn't there be exercises? --jai 12:20, Aug 13, 2004 (UTC)

{{msg:quantity}}

I don't see that {{msg:quantity}} hurt this page in any way. It seems like a generally good idea. Why remove it? -rs2 00:27, 29 Mar 2004 (UTC)

Removed text

In the discussion of the argument of a complex number, I removed the following:

Note that this is exactly the same problem encountered when trying to define the inverse tangent as a function. The connection becomes more transparent when one considers that the formula for calculating arg(z) is arg(z) = arctan(b/a) if z = a + i b.

The values of the arctan function lie between -Pi/2 and +Pi/2, while arguments of complex numbers lie between -Pi and +Pi. The arctan formula for arg(z) is therefore incorrect. Most programming language have a function atan2(b, a) which returns the proper argument of a + i b by taking the signs of a and b into account. --AxelBoldt

Spanish translation

You can see the translation to spanish in http://es.wikipedia.com/wiki.cgi?Números_Complejos --Atlante

Graphical explanation

A graphical explanation is better than words. Should add images sometime. --Wshun

De Moivre's formula

I could not find Demovire's theorem for complex numbers,should add this.-Raj.B (India-Karnataka-Mysore)

It's at De Moivre's formula. I've put a link to it in the article. --Zundark 10:18, 13 Dec 2003 (UTC)

Was this copied?

Is this page originally copied from somewhere? -- Walt Pohl 18:04, 13 Mar 2004 (UTC)

Proper fields isomorophic

Can someone give an example of a proper subfield of C isomorphic to C, or at least show one exists? I'm not saying I think it's not true; I just don't remember seeing this, so I'm interested how it's done. Revolver 13:49, 2 Nov 2004 (UTC)

There's an argument showing that these subfields exist at the end of the transcendence degree article. -- Fropuff 16:22, 2004 Nov 2 (UTC)

I get it. I think a comment saying that it's not constructive, that the axiom of choice is used, and so no such explicit subfield can be produced, would be good to say. Revolver 19:46, 2 Nov 2004 (UTC)