OAI/GroupTheory/PolycyclicRecognition/Algebra/SlowPositiveSelection.lean
2 declarations, 0 contain sorry, 0 declared as axioms
Slowly shrinking good sets with subexponential mass
- theorem
OAI.PolycyclicRecognition.exists_slow_eventual_selectionline 19Source documentation
Countably many eventual properties can be followed at a slowly increasing index. This is used only for the shrinking profile neighborhoods.
theorem exists_slow_eventual_selection (P : ℕ → ℝ → Prop) (hP : ∀ j, ∀ᶠ r in atTop, P j r) : ∃ k : ℝ → ℕ, Tendsto k atTop atTop ∧ ∀ᶠ r in atTop, P (k r) r := by … - theorem
OAI.PolycyclicRecognition.exists_slow_subexponential_massline 37Source documentation
If every fixed good set has a positive eventual mass, the good set can shrink to its limiting profile slowly enough that its mass is
exp(-o(r)).theorem exists_slow_subexponential_mass (mass : ℕ → ℝ → ℝ) (hmass : ∀ j, ∃ c : ℝ, 0 < c ∧ ∀ᶠ r in atTop, c ≤ mass j r) : ∃ k : ℝ → ℕ, Tendsto k atTop atTop ∧ HasSubexponentialLowerBound (fun r => mass (k r) r) := by …Mentions: OAI.PolycyclicRecognition.HasSubexponentialLowerBound