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  • Worlds
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  • Higher Spatial Dimensions
    Ideas about how a world with more than three spatial dimensions would work - what laws of physics would be needed, how things would be built, how people would do things and so on.
    423 Topics
    5219 Posts
    Last post by PatrickPowers View the latest post
    Tue Jul 23, 2019 8:38 pm
  • Non-Spatial Dimensions
    Discussion of theories involving time as a dimension, time travel, relativity, branes, and so on, usually applying to the "real" universe which we live in.
    134 Topics
    1675 Posts
    Last post by gonegahgah View the latest post
    Wed Mar 13, 2019 1:05 pm
  • Consciousness
    Discussions about the possibility of consciousness, free will, spirits, deities, religions and so on, and how these might interact with time travel, the Big Bang, many worlds and so on.
    64 Topics
    1256 Posts
    Last post by Linda111 View the latest post
    Tue Jul 02, 2019 8:28 am
  • Toratopes
    Discussion of shapes with curves and holes in various dimensions.
    113 Topics
    2478 Posts
    Last post by ICN5D View the latest post
    Tue Jul 16, 2019 11:26 pm
  • CRF Polytopes
    Discussion of known convex regular-faced polytopes, including the Johnson solids in 3D, and higher dimensions; and the discovery of new ones.
    65 Topics
    2869 Posts
    Last post by Klitzing View the latest post
    Sun Jul 14, 2019 8:44 am
  • Other Polytopes
    Discussion of tapertopes, uniform polytopes, and other shapes with flat hypercells.
    199 Topics
    2349 Posts
    Last post by ubersketch View the latest post
    Fri Jul 12, 2019 1:28 pm
  • Other Geometry
    Higher-dimensional geometry (previously "Polyshapes").
    191 Topics
    1816 Posts
    Last post by Marek14 View the latest post
    Tue Jul 23, 2019 11:58 am
  • Where Should I Post This?
    If you don't know where to post something, put it here and an administrator or moderator will move it to the right place.
    338 Topics
    3167 Posts
    Last post by Klitzing View the latest post
    Sun Mar 10, 2019 8:27 am
  • Programming
    Discuss interdimensional programming, Java applets and so forth.
    70 Topics
    486 Posts
    Last post by mr_e_man View the latest post
    Fri Jun 14, 2019 7:30 am
  • Visualization
    Discussions about how to visualize 4D and higher, whether through crosseyedness, dreaming, or connecting one's nerves directly to a computer sci-fi style.
    21 Topics
    524 Posts
    Last post by PatrickPowers View the latest post
    Fri Nov 30, 2018 3:45 pm

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