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 Una Construcción Nueva: Definición – Mengenlehre on Von Neumann universe
 jasonhise64 on The BarnesWall lattices
 The BarnesWall lattices  Complex Projective 4Space on Minimalistic quantum computation
 The BarnesWall lattices  Complex Projective 4Space on Subsumptions of regular polytopes
 Caleb Swabel on Rational distance problem
Monthly Archives: October 2020
Closedform numbers
Recall that the logarithm function (defined on the punctured complex plane) is multivalued, with the different solutions to exp(x) = y differing by integer multiples of 2πi. James Propp remarked that the values of the form i^i^i are a … Continue reading
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The BarnesWall lattices
For any nonnegative integer n, there exists the highly symmetric BarnesWall lattice in dimension . In low dimensions, these are (up to scaling and rotation) familiar lattices: For n = 0, this is just the integer lattice, . For n … Continue reading
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Subsumptions of regular polytopes
We say that a regular ndimensional polytope P subsumes a regular ndimensional polytope Q if the vertexset of Q is geometrically similar to a subset of the vertexset of P. For instance, the dodecahedron subsumes a cube (the convex hull … Continue reading
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