Talk:Theorema Egregium

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Mathematics rating:	Start Class	High Priority	Field: Geometry
Please update this rating as the article progresses, or if the rating is inaccurate. Click to show/hide comments. Please add to or update the comments to suggest improvements to the article. Arcfrk (talk) 03:05, 11 March 2008 (UTC)

[edit] In joke?

I've discovered the following text removed from an earlier version of the article:

A somewhat whimsical application of the Theorema Egregium is seen in a common pizza-eating strategy: A slice of pizza can be seen as a surface with constant Gaussian curvature 0. Gently bending a slice must then roughly maintain this curvature (assuming the bend is roughly a local isometry). If one bends a slice horizontally across a radius, non-zero principal curvatures are created along the bend, dictating that the other principal curvature at these points must be zero. This creates rigidity in the direction perpendicular to the fold, an attribute desirable when eating pizza (since it prevents stuff from falling off and making a mess).

The removed wrote:

remove mathematical injoke, might be funny to mathematicians but should not be in an encyclopedia

The "application" itself is far from being formally encyclopaedic, but I disagree with its classification as the "injoke" and rather think that it is a good informal illustration of the meaning of the theorem. Arcfrk (talk) 03:24, 11 March 2008 (UTC)