OAI/Combinatorics/EuclideanRamsey/SphereTransport.lean
1 declarations, 0 contain sorry, 0 declared as axioms
- theorem
OAI.EuclideanRamsey.cospherical_transportline 14Source documentation
A full-affine-span representative transfers its sphere to any congruent configuration. The translated linear isometry preserves the radius exactly; in particular, there is no rescaling of the pairwise distances. No injectivity or positive-dimension hypothesis is needed for this transport lemma.
theorem cospherical_transport {s D d : ℕ} (a : Fin s → Space D) (b : Fin s → Space d) (hspan : affineSpan ℝ (Set.range b) = ⊤) (hab : Congruent a b) (hb : EuclideanGeometry.Cospherical (Set.range b)) : EuclideanGeometry.Cospherical (Set.range a) := by …Mentions: OAI.EuclideanRamsey.Space, OAI.EuclideanRamsey.Congruent