OAI/GroupTheory/PolycyclicRecognition/Geometry/CartanPolarConeKernel.lean
10 declarations, 0 contain sorry, 0 declared as axioms
Removing the polar cone vertex without changing the mixed ideal
The polar template uses a closed cone containing zero. The cone quotient must kill the zero generalized weight space to descend the overlapping Cartan factors. Salience and the nonzero generator weights supply this bridge for the same mixed ideal.
- theorem
OAI.PolycyclicRecognition.closedWeightRay_salientline 23 - theorem
OAI.PolycyclicRecognition.closedTwoWeightCone_salientline 37 - theorem
OAI.PolycyclicRecognition.transformedPolarCone_salientline 51 - theorem
OAI.PolycyclicRecognition.CartanWordModel.coneWordIdeal_eq_of_generator_membershipline 76 - def
OAI.PolycyclicRecognition.CartanWordModel.positiveHeightConePreimageline 85Source documentation
Pullback cone with its zero height functional removed.
def positiveHeightConePreimage (K : ProperCone ℝ (StrongDual ℝ W)) : Set (H →ₗ[ℝ] ℝ) := …
- theorem
OAI.PolycyclicRecognition.CartanWordModel.heightConePreimage_addline 90 - theorem
OAI.PolycyclicRecognition.CartanWordModel.positiveHeightConePreimage_addline 97 - theorem
OAI.PolycyclicRecognition.CartanWordModel.zero_not_mem_positiveHeightConePreimageline 110 - theorem
OAI.PolycyclicRecognition.CartanWordModel.coneWordIdeal_positiveHeight_eqline 116Source documentation
Removing the vertex does not remove any of the nonzero generator weights.
theorem coneWordIdeal_positiveHeight_eq (K : ProperCone ℝ (StrongDual ℝ W)) : M.coneWordIdeal (positiveHeightConePreimage T eW K) = M.coneWordIdeal (heightConePreimage T eW K) := by …Mentions: OAI.PolycyclicRecognition.CartanWordModel.positiveHeightConePreimage, OAI.PolycyclicRecognition.CartanWordModel.heightConePreimage
- theorem
OAI.PolycyclicRecognition.CartanWordModel.zero_genWeightSpace_le_polarConeIdealline 129Source documentation
The closed polar cone gives the same zero-weight-killing ideal needed to descend the action from the overlapping actual Cartan factors.
theorem zero_genWeightSpace_le_polarConeIdeal (K : ProperCone ℝ (StrongDual ℝ W)) (hK : (K : ConvexCone ℝ (StrongDual ℝ W)).Salient) : (genWeightSpace (cartanRootIdeal H) (0 : H → ℝ)).toSubmodule ≤ (M.coneWordIdeal (heightConePreimage T eW K)).toSubmodule := by …Mentions: OAI.PolycyclicRecognition.cartanRootIdeal, OAI.PolycyclicRecognition.CartanWordModel.heightConePreimage