(* Beispiel *) Remove["Global`*"] Needs["LinearAlgebra`MatrixManipulation`"] m4={{a1,b1,c1,d1},{a2,b2,c2,d2},{a3,b3,c3,c4},{a4,b4,c4,d4}}; m4 //MatrixForm tm=Transpose[m4]; tm //MatrixForm