Equivariant full-coordinate lift of the S5 reference map #
The fixed-last-coordinate lift is convenient for calculations but obscures equivariance. Here the reference map is lifted before choosing difference coordinates: non-top cells use all block indices, while top cells use the full triangular rank vector. Taking differences against the last label recovers exactly the S5 map. Relabelling acts by the same coordinate permutation, so this lift is genuinely prime-equivariant.
Equivariant full-coordinate lift of the S5 affine reference map.
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Its fixed difference-coordinate map is the S5 reference map.
Vertex data transform by coordinate relabelling.
The global full-coordinate reference map is prime-equivariant.
A finite uniform vertex bound for the equivariant lift.
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- NRR.AAK.equivariantReferenceAbsBound hp = 1 + ∑ c : NRR.BarredPermutation p, ∑ i : Fin p, |(NRR.AAK.equivariantReferenceCoordinateMap hp).vertexValue c i|
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Globally positive equivariant reference lift.
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Globally negative equivariant reference lift.
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Positive local indices agree with S5 because the deviation is unchanged.