Theorems · Theorem · linear algebra
cross_dot_cross
∀ {R : Type u_1} [inst : CommRing R] (u v w x : Fin 3 → R),
(crossProduct u) v ⬝ᵥ (crossProduct w) x = u ⬝ᵥ w * v ⬝ᵥ x - u ⬝ᵥ x * v ⬝ᵥ wThe scalar quadruple product identity, related to the Binet-Cauchy identity.
- Defined in
- Mathlib.LinearAlgebra.CrossProduct
- Cited by
- 1 results in Mathlib
- Foundations
- Depth 83 from the axioms · uses propext, Classical.choice, Quot.sound
- Assumes
- CommRing
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites9
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- DFunLike.coestatement · cited by 62,936
- RingHom.idstatement · cited by 18,349
- CommRingstatement and proof · cited by 17,173
- LinearMapstatement · cited by 10,215
- Matrix.vecConsproof · cited by 852
- Matrix.vecEmptyproof · cited by 832
- dotProductstatement · cited by 194
- crossProductstatement · cited by 27
- Matrix.vec3_dotProductproof · cited by 6
Cited by1
Results whose statement or proof uses this declaration.
- InnerProductGeometry.norm_ofLp_crossProductproof · cited by 1