3 thoughts on “Euler’s Formula, Fibonacci, the Bayer-Billera Theorem, and Fine’s CD-index

  1. Pingback: Carnival of Mathematics « Rigorous Trivialities

  2. Jonathan Vos Post

    It seems clear that, in the 24-cell exercise, that the beautiful self-dual 4-polytope has 24 octahedral facets. Hence f_0 = f_3 = 24. Further, f_1 = f_2 =96. Then f_{02} = 288, and f_{03}=192. Anything left to compute?

  3. Pingback: Why Planar Graphs are so Exceptional « Combinatorics and more

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