Nonparabolic coordinates outside the endgame component #
At the exponent used by the explicit route, a normalized parabolic trace has
rotation order at least p ^ (5 / 6). Consequently, once every point at that
threshold is connected to a fixed base point, every point outside the base
component has nonparabolic coordinates.
theorem
BGS.Markoff.first_two_nonparabolic_of_not_sameComponent_of_endgame_large_connected
{p : ℕ}
[Fact (Nat.Prime p)]
[Invertible 3]
(hpTwo : p ≠ 2)
(base z : NormalizedMarkoffSurface (ZMod p))
(hlarge :
∀ (y : NormalizedMarkoffSurface (ZMod p)),
↑p ^ (5 / 6) ≤ ↑(maximalCoordinateRotationOrder ↑y) → SameNormalizedComponent base y)
(hnot : ¬SameNormalizedComponent base z)
:
A point outside a component containing every endgame-large point has nonparabolic first and second coordinates.