Class of matrices whose elements are quantities
(<=> (Matrix-Quantity ?M) (And (Matrix ?M) (Physical-Quantity ?M) (Forall (?I ?J) (=> (Defined (Value ?M ?I ?J)) (= (Quantity.Dimension ?M) (Quantity.Dimension (Value ?M ?I ?J)))))))
(Forall (?I ?J) (=> (Defined (Value ?M ?I ?J)) (= (Quantity.Dimension ?M) (Quantity.Dimension (Value ?M ?I ?J))))) (Physical-Quantity ?M) (Matrix ?M)
(<=> (Matrix-Quantity ?M) (And (Matrix ?M) (Physical-Quantity ?M) (Forall (?I ?J) (=> (Defined (Value ?M ?I ?J)) (= (Quantity.Dimension ?M) (Quantity.Dimension (Value ?M ?I ?J))))))) (<=> (Numeric-Matrix ?M) (And (Matrix-Quantity ?M) (Dimensionless-Quantity ?M))) (Nth-Domain Tensor-To-Matrix 3 Matrix-Quantity) (=> (= (Tensor-To-Matrix ?T ?Basis) ?M) (Matrix-Quantity ?M)) (Nth-Domain The-Vector-Quantity 1 Matrix-Quantity) (=> (= (The-Vector-Quantity ?M ?B) ?V) (Matrix-Quantity ?M)) (Nth-Domain The-Dyad 1 Matrix-Quantity) (=> (= (The-Dyad ?M ?B) ?T) (Matrix-Quantity ?M))