pith. machine review for the scientific record. sign in
structure definition def or abbrev

L4DerivableCert

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)

 185structure L4DerivableCert (𝒞 : Type*) where
 186  l4_from_recognizer :
 187    ∀ m : MultiplicativeRecognizer 𝒞,
 188      ∃ P : ℝ → ℝ → ℝ,
 189        ∀ x y : ℝ, 0 < x → 0 < y →
 190          m.cost (x * y) + m.cost (x / y) = P (m.cost x) (m.cost y)
 191  l4_polynomial_form :
 192    ∀ m : MultiplicativeRecognizer 𝒞,
 193      MultiplicativeL4Polynomial m
 194  identity_at_one :
 195    ∀ m : MultiplicativeRecognizer 𝒞, m.cost 1 = 0
 196  reciprocal_symmetry :
 197    ∀ m : MultiplicativeRecognizer 𝒞,
 198      ∀ x : ℝ, 0 < x → m.cost x = m.cost (x⁻¹)
 199

used by (2)

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

depends on (4)

Lean names referenced from this declaration's body.