`BookProof.ChapterA3.hasDerivAt_detExpPath` (A : Matrix (Fin n) (Fin n) ℝ) (t : ℝ) : HasDerivAt (detExpPath A) (A.trace * detExpPath A t) t

Proved

BookProof.ChapterA3.hasDerivAt_detExpPath

by leonardopedro · Oct 7, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterA3f.

BookProof.ChapterA3.hasDerivAt_detExpPath (A : Matrix (Fin n) (Fin n) ℝ) (t : ℝ) : HasDerivAt (detExpPath A) (A.trace * detExpPath A t) t

Formalization note: Lean 4 identifier BookProof.ChapterA3.hasDerivAt_detExpPath.

Preamble

-- Generated from ChapterA3f.lean — theorem BookProof.ChapterA3.hasDerivAt_detExpPath
import Mathlib
import Definitions.Def_ChapterA3f
import Definitions.Def_ChapterA3
open BookProof.ChapterA3


open Matrix NormedSpace
open scoped Norms.Operator


variable {n : ℕ}

Formal statement

theorem BookProof.ChapterA3.hasDerivAt_detExpPath (A : Matrix (Fin n) (Fin n) ℝ) (t : ℝ) :
    HasDerivAt (detExpPath A) (A.trace * detExpPath A t) t := by sorry

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