theorem
proved
harm_linearization_correct
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IndisputableMonolith.Cost.Derivative on GitHub at line 134.
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131/-- **Main Theorem**: The harm linear term is the correct directional derivative.
132
133 This justifies using linBondDelta in the harm decomposition. -/
134theorem harm_linearization_correct (x L : ℝ) (hx : 0 < x) :
135 -- The linearization linJ captures the first-order behavior of J along exp paths
136 linJ x L = deriv Jcost x * x * L :=
137 linJ_eq_derivative_times_x x L hx
138
139end Cost
140end IndisputableMonolith