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Continuity on the branch-safe domain

Proved
WeightedRootIntegralIdentity.missionBranchRegularity

by abcdefg · Sep 20, 2026 · Mathlib 0df444a (Lean v4.33.1)

branch-cutcomplex-analysisholomorphicity

A differentiable branch integrand on the slit contour domain is continuous there, hence continuous on each finite contour piece.

Formal statement
import Mathlib

theorem WeightedRootIntegralIdentity.missionBranchRegularity
    (F : ℂ → ℂ) (D : Set ℂ)
    (hF : DifferentiableOn ℂ F D) :
    ContinuousOn F D := by sorry

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