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when toggle format what by license comment
Oct 21, 2018 at 9:00 vote accept Dominic van der Zypen
Oct 21, 2018 at 8:17 comment added Thomas Rot You can also do this with any positive dimensional connected manifold I think.
Oct 21, 2018 at 8:04 history answered Keith Kearnes CC BY-SA 4.0