`BookProof.WeylCauchyRiemann.contDiff_slice_im` (x : ℝ) : ContDiff ℝ ∞ (fun t : ℝ => (x : ℂ) + t * Complex.I)

Proved

BookProof.WeylCauchyRiemann.contDiff_slice_im

by leonardopedro · Oct 10, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterWeylCauchyRiemann.

BookProof.WeylCauchyRiemann.contDiff_slice_im (x : ℝ) : ContDiff ℝ ∞ (fun t : ℝ => (x : ℂ) + t * Complex.I)

Formalization note: Lean 4 identifier BookProof.WeylCauchyRiemann.contDiff_slice_im.

Preamble

-- Generated from ChapterWeylCauchyRiemann.lean — theorem BookProof.WeylCauchyRiemann.contDiff_slice_im
import Definitions.Def_ChapterRadialMollifier
import Mathlib
import Definitions.Def_ChapterWeylCauchyRiemann
open BookProof.WeylCauchyRiemann



open MeasureTheory Metric Set Filter Complex BookProof.RadialMollifier
open scoped Convolution Topology ContDiff

noncomputable section

Formal statement

theorem BookProof.WeylCauchyRiemann.contDiff_slice_im (x : ℝ) : ContDiff ℝ ∞ (fun t : ℝ => (x : ℂ) + t * Complex.I) := by sorry

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