pith. sign in
module module high

IndisputableMonolith.Numerics.Interval.AlphaBounds

show as:
view Lean formalization →

Module Numerics.Interval.AlphaBounds supplies machine-verified interval bounds on the fine-structure constant via the seed quantity 4 pi * 11. Scorecard and prediction modules for electron g-2, masses, CKM angles, and Hartree-Rydberg quantities import these bounds to certify agreement with measured intervals. The module consists of Taylor-expansion lemmas with explicit remainder controls together with direct comparisons that establish the seed inequality and related exponential bounds at points near 0.48.

claim$\alpha_{\rm seed} = 4\pi\cdot 11 > 138.230048$, with companion upper and lower bounds obtained from Taylor remainders of $\exp$ at arguments 0.48, 0.481, 0.483.

background

The module imports W8Bounds, whose central object is the closed-form eight-tick weight $w_8 = (348 + 210\sqrt{2} - (204 + 130\sqrt{2})\phi)/7 \approx 2.490569$, and Constants.Alpha. These supply the numerical constants needed to convert the Recognition Science phi-ladder and J-cost into concrete interval statements for $\alpha^{-1}$. The local setting is the numerics layer that turns the abstract T5 J-uniqueness and T7 eight-tick octave into machine-checked inequalities lying inside the target band (137.030, 137.039).

proof idea

The module is a collection of definition and lemma blocks. Each block introduces a Taylor polynomial of degree 10 for exp together with an explicit error term, then applies interval arithmetic to obtain strict inequalities at the three evaluation points 0.48, 0.481, 0.483. The seed comparison alpha_seed_gt is obtained by direct arithmetic on the imported constants.

why it matters in Recognition Science

The bounds are imported by HartreeRydbergScoreCard (P1-C02, P1-C03, P1-C04), Masses.NumericalPredictions, CKMGeometry, ElectronGMinus2ScoreCard (P1-C05), and ElectronMass.Necessity. They close the numerical verification step that links the eight-tick octave and phi-ladder to the experimental alpha band required by the downstream physical derivations.

scope and limits

used by (5)

From the project-wide theorem graph. These declarations reference this one in their body.

depends on (2)

Lean names referenced from this declaration's body.

declarations in this module (31)