Talk:Unit sphere

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Articles like this really need an introductory sentence or two - after all, wikipedia isn't a textbook or a scientific journal. Granted, putting abstract mathematical concepts into non-symbols can be very, very difficult, but wikipedia is one of the few venues where non-mathematicians may come across these concepts at all, so it's worth the effort. Perhaps something could be adapted from the introduction of ball (mathematics), which mentions the unit ball. - DavidWBrooks 18:44, 19 Apr 2004 (UTC)

[edit] Unit sphere or Unit ball?

Wrote the non-technical intro starting with "unit sphere" rather than "unit ball". In my opinion, the article should be titled "unit sphere" and "unit ball" redirected to it, rather than the other way around. Not a huge difference either way, but the rationale is: (1) the WP article on sphere is richer than the article on ball; (2) the use of the word sphere in mathematics is closer to ordinary language than the use of the word ball is. Hence it's slightly easier for the nonmathematical reader to get a handle on this (admittedly, not too difficult) subject by starting with 'sphere' and defining 'ball' in terms of it.Brian Tvedt 01:02, 23 August 2005 (UTC)

Done.--agr 15:27, 25 October 2006 (UTC)