pith. machine review for the scientific record. sign in
theorem proved term proof

costAt_neg_eq

show as:
view Lean formalization →

No prose has been written for this declaration yet. The Lean source and graph data below render without it.

generate prose now

formal statement (Lean)

 102theorem costAt_neg_eq (v : MultIndex) : costAt (-v) = costAt v := by

proof body

Term-mode proof.

 103  unfold costAt
 104  rw [toRat_neg]
 105  exact (Jcost_symm (toRat_pos v)).symm
 106
 107/-! ## The state space: free ℝ-module on `MultIndex` -/
 108
 109/-- The pre-Hilbert space: free `ℝ`-module on `MultIndex`. -/

used by (2)

From the project-wide theorem graph. These declarations reference this one in their body.

depends on (7)

Lean names referenced from this declaration's body.