Talk:Superegg

Equation nuance
The egg is mentioned in ISBN 9781402757969 (The Math Book by Pickover)p. 428 shows the equation as a strict equality. I wouldn't be able to say either way ...--Billymac00 (talk) 03:32, 26 December 2009 (UTC)
 * This refers to the set of points. When only strict equal, only the surface points fulfil the equation. With the inequality also internal points belong to the set; it is solid. Unless you have x-ray vision this does not matter :) Mark Ruvald 82.143.236.166 (talk) 09:10, 23 January 2010 (UTC)

Why can it stand?
The article says it can stand due to the curvature being 0 at the tips, however clearly this is also true of a rotated ellipsis or circle. Thomasda (talk) 08:07, 29 August 2013 (UTC)
 * The gaussian curvature of a sphere of radius r is $$1/r^2$$ which is strictly positive. Likewise ellipsoids all have strictly positive curvature.
 * I do think the statement needs to be sharpened somewhat. Its vague about which type of curvature it is. If its Gaussian curvature a cylinder also zero gaussian curvature but is not as stable. The ends are flat-umbilics and all sectional curvatures are zero which might be enough, but Monkey saddle also has this property.--Salix (talk): 10:13, 29 August 2013 (UTC)

Volume equation
Is there a particular reason why the volume equation uses the Gamma function instead of the Beta function? tiral (talk) 02:48, 19 October 2023 (UTC)