Talk:Sign function

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I removed the following

Also, if the step function h0(x) is thought of as a mathematical switch, with h0(x) = 0, then the signum function can be expressed as
\sgn x = h_0 (|x|) (-1)^{h_0(-x)}.

as I do not understand what it adds.--Henrygb 14:34, 29 Mar 2005 (UTC)

Since h(x) can be different things, it looks like someone was just leaving a note of how to calculate sgn for people who are used to using another definition of h(x)? Who added it in the first place? - Omegatron 16:12, Mar 29, 2005 (UTC)

isn't it kinda dumb to have this and the signum function page, which are talking about the same thing????Scythe33

[edit] Link to "sign" page

In the first paragraph, the word "sign" in "extracts the sign of a real number" was linked to the Negative and non-negative numbers page. There doesn't seem to be a page for the correct concept. I have removed the link. Iggle 08:27, 27 March 2006 (UTC)

[edit] Pronunciation?

Does anyone know the correct pronunciation of "signum"? I'd intuitively say "sigg-numb", but in context, "sigh-numb" might also be correct. Might be worth putting in.


Hmmmmm... I checked Wiktionary, but it didn't provide a pronunciation. And dictionary.com provided no entries. I usually pronounce it "sigg-numb," like you. -- He Who Is[ Talk ] 18:17, 22 June 2006 (UTC)

[edit] Complex Signum

I've added a section on the signum of complex numbers. Feel free to critique or remove, if you feel it is extrenuous. -- He Who Is[ Talk ] 18:14, 22 June 2006 (UTC)

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