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xkcd #3077: de Sitter (xkcd.com)

submitted 1 month ago by [email protected] to c/[email protected]

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Our anti-de Sitter club is small at the moment, but I've started corresponding with the conformal field theory people.

https://explainxkcd.com/3077/

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[–] [email protected] 9 points 1 month ago* (last edited 1 month ago) (1 children)

Yup! That saddle is a shape of constant negative curvature. On a toroid, the inside of the hole would have negative curvature and the outside would have positive curvature.

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[–] [email protected] 5 points 1 month ago

Wow. That would be truly bizarre kind of space to live in.

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