OAI/GroupTheory/PolycyclicRecognition/Geometry/WeightSamplingSupport.lean
2 declarations, 0 contain sorry, 0 declared as axioms
Exact positive widths of the sampling polytope
- theorem
OAI.PolycyclicRecognition.weightSampling_support_eq_normline 15Source documentation
Every defining halfspace is attained at its Euclidean contact point.
theorem weightSampling_support_eq_norm {W I : Type*} [NormedAddCommGroup W] [InnerProductSpace ℝ W] [FiniteDimensional ℝ W] [Fintype I] (α : I → W →L[ℝ] ℝ) (hC : IsCompact (weightSamplingPolytope α)) (i : I) (hi : α i ≠ 0) : sSup (α i '' weightSamplingPolytope α) = ‖α i‖ := by … - theorem
OAI.PolycyclicRecognition.bracketWordExponent_posline 33Source documentation
Every nonempty bracket word has strictly positive sampling width.
Distinct definitions of this name: OAI/GroupTheory/PolycyclicRecognition/Algebra/WordExponentBounds.lean:15 (different declaration text). Qualify references as OAI.PolycyclicRecognition.bracketWordExponent_pos@path.
theorem bracketWordExponent_pos {I : Type*} [Fintype I] [DecidableEq I] (s : I → ℝ) (hs : ∀ i, 0 < s i) (w : FreeMagma I) : 0 < bracketWordExponent s w := by …