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#poncelet — Public Fediverse posts

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  1. Triangulate a cyclic polygon. “Japanese theorem”: the sum of inradii of triangles doesn't depend on the triangulation.

    Moreover, this sum is constant in the “Poncelet family” of all polygons with the same incircle and circumcircle.

    #poncelet #geometry

  2. Triangulate a cyclic polygon. “Japanese theorem”: the sum of inradii of triangles doesn't depend on the triangulation.

    Moreover, this sum is constant in the “Poncelet family” of all polygons with the same incircle and circumcircle.

    #poncelet #geometry

  3. Triangulate a cyclic polygon. “Japanese theorem”: the sum of inradii of triangles doesn't depend on the triangulation.

    Moreover, this sum is constant in the “Poncelet family” of all polygons with the same incircle and circumcircle.

    #poncelet #geometry

  4. @ocfnash
    olivernash.org/2018/07/08/pori

    Awesome!
    I'd love to find out about #Poncelet generalizations or related results in 3+1 dimensional flat #MinkowskiSpace, with

    - all relevant edges along light cones (Are those "singular" and perhaps problematic, even in 3+1 D ?), and

    - the \(n\)-sided polygon generalized to a #PingCoincidenceLattice (cmp. my sketch mathstodon.xyz/@MisterRelativi )

    #SpaceTime #InertialFrame #geometry #relativity

  5. @ocfnash
    olivernash.org/2018/07/08/pori

    Awesome!
    I'd love to find out about #Poncelet generalizations or related results in 3+1 dimensional flat #MinkowskiSpace, with

    - all relevant edges along light cones (Are those "singular" and perhaps problematic, even in 3+1 D ?), and

    - the \(n\)-sided polygon generalized to a #PingCoincidenceLattice (cmp. my sketch mathstodon.xyz/@MisterRelativi )

    #SpaceTime #InertialFrame #geometry #relativity