maxtriksi fu'ivla

x1 is a matrix (mathematical object/number/operator) representing or meaning (object/information) x2 with properties x3

This definition refers to the object, not the representation. A given maxtriksi is not changed by a chance of base no matter how its appearance does, and two maxtriksi are not the same, even if they are represented in equivalent forms in some bases (or even the same one).