`BookProof.ChapterAttentionPrior.priorSoftmax_sum_one` {w : Fin m → ℝ} (hw : ∀ j, 0 < w j) (beta : ℝ) (s : Fin m → ℝ) (i : Fin m) : ∑ j, priorSoftmax w beta s j = 1

Proved

BookProof.ChapterAttentionPrior.priorSoftmax_sum_one

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

theoremstimepiece

Prove the following Lean 4 theorem from ChapterAttentionPrior.

BookProof.ChapterAttentionPrior.priorSoftmax_sum_one {w : Fin m → ℝ} (hw : ∀ j, 0 < w j) (beta : ℝ) (s : Fin m → ℝ) (i : Fin m) : ∑ j, priorSoftmax w beta s j = 1

Formalization note: Lean 4 identifier BookProof.ChapterAttentionPrior.priorSoftmax_sum_one.

Preamble

-- Generated from ChapterAttentionPrior.lean — theorem BookProof.ChapterAttentionPrior.priorSoftmax_sum_one
import Definitions.Def_ChapterSoftmaxSharpness
import Definitions.Def_ChapterSoftmaxOrder
import Mathlib
import Definitions.Def_ChapterAttentionPrior
open BookProof.ChapterAttentionPrior


open scoped BigOperators

noncomputable section


open BookProof.ChapterSoftmaxSharpness BookProof.ChapterSoftmaxOrder

variable {m : ℕ}

Formal statement

theorem BookProof.ChapterAttentionPrior.priorSoftmax_sum_one {w : Fin m → ℝ} (hw : ∀ j, 0 < w j) (beta : ℝ)
    (s : Fin m → ℝ) (i : Fin m) : ∑ j, priorSoftmax w beta s j = 1 := by sorry

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