Weighted reeb formula algebra
ProvedBirkhoffGlobalSection.weighted_reeb_formula_algebradifferential-geometryreal-analysis
For a unit-sphere point, positive scalar weight and supplied continuous linear coefficient L, the displayed explicit quaternionic formula satisfies tangency, contact normalization and the algebraic Reeb pairing identities.
All displayed regularity, tangency, normalization and supplied-data hypotheses of the exact formal statement are retained.
Preamble
import Theorems.Thm_BirkhoffGlobalSection_weighted_sphere_contact_geometry import Theorems.Thm_BirkhoffGlobalSection_gauge_inverse_contact_weight import Definitions.Def_BirkhoffGlobalSection_ContactVariationalInterfaces open BirkhoffGlobalSection Set Filter SignType open scoped ContDiff Topology set_option linter.unusedVariables false set_option autoImplicit false set_option maxHeartbeats 800000
Formal statement
theorem BirkhoffGlobalSection.weighted_reeb_formula_algebra (u : Phase) (hu : u ∈ unitThreeSphere)
(a : ℝ) (ha : 0 < a) (L : Phase →L[ℝ] ℝ) :
let J : Phase → Phase := fun v => ![v 2, v 3, -v 0, -v 1]
let g : Phase := fun i => L (coordinateVector i)
let R : Phase := (a ^ 2)⁻¹ • ((2 * a + L u) • J u - J g - L (J u) • u)
(u 0 * R 0 + u 1 * R 1 + u 2 * R 2 + u 3 * R 3 = 0) ∧
a * phaseRadialContact u R = 1 ∧
(∀ w : Phase,
u 0 * w 0 + u 1 * w 1 + u 2 * w 2 + u 3 * w 3 = 0 →
L R * phaseRadialContact u w - L w * phaseRadialContact u R -
a * phaseSymplecticForm R w = 0) := by sorrySource
Original auxiliary result from the accepted source Solutions/Sol_BirkhoffGlobalSection_weighted_reeb_bundle.lean:22. Exact quantified statement retained; foundational calculus and geometry are imported from Mathlib 0df444a360eaa60ab8c11dca51a86af692955474.