**Defined in theory: Tensor-quantities****Source code: tensor-quantities.lisp**

**Documentation:**Class of matrices whose elements are quantities

**Subclass-Of:**Matrix, Physical-quantity

(<=> (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)))))))