OAI/GroupTheory/PolycyclicRecognition/Analysis/MinimizingMetricChains.lean
1 declarations, 0 contain sorry, 0 declared as axioms
Metric chains supplied by the chosen minimizing paths
- def
OAI.PolycyclicRecognition.linearMetricChains_of_minimizing_pathsline 15Source documentation
Sampling the chosen minimizing paths gives the concrete chain witnesses needed by the canonical-height and proper-homomorphism metric bridges.
def linearMetricChains_of_minimizing_paths {G : Type*} [Group G] [MetricSpace G] [IsIsometricSMul G G] (hpath : ∀ g : G, ∃ γ : ℝ → G, γ 0 = 1 ∧ γ 1 = g ∧ ∀ t ∈ Icc (0 : ℝ) 1, ∀ u ∈ Icc (0 : ℝ) 1, dist (γ t) (γ u) ≤ dist 1 g * |t - u|) : LinearMetricChains G := by …