∀ {R : Type u1} [inst : CommRing R] {M : Type u2} [inst_1 : AddCommGroup M] [inst_2 : Module R M]
  {Q Q' : QuadraticForm R M} {B B_1 : LinearMap.BilinForm R M} (e_B : B = B_1)
  (h : LinearMap.BilinMap.toQuadraticMap B = Q' - Q),
  CliffordAlgebra.changeFormEquiv h = CliffordAlgebra.changeFormEquiv ⋯