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Tarcha 3.15 left interpolation pairwise local separation

Proved
TarchaBraids.thm_3_15_adjacent_left_pairwise_separation_v1

by WillR · Sep 21, 2026 · Mathlib 0df444a (Lean v4.33.1)

artin-presentationbraid-groupsconfiguration-spacetarcha

Throughout the explicit left interpolation, the three distinguished local strands remain pairwise distinct for all interpolation and path parameters in the unit interval.

Preamble
import Mathlib
import Definitions.Def_TarchaBraids_adjacent_separation_interfaces_v1
Formal statement
namespace TarchaBraids

open BraidsLinksMCG

theorem thm_3_15_adjacent_left_pairwise_separation_v1 :
    ∀ {n : ℕ} (i j : Fin (n - 1)) (hji : (j : ℕ) = (i : ℕ) + 1),
      AdjacentLeftPairwiseSeparationFacts i j hji := by sorry

end TarchaBraids
Source
Modular pairwise-separation layer of the explicit adjacent Artin relation interpolation proof.

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