I am trying to transpose an expression in fusion. According to fusion API's document I tried to transpose the Expression by Expr.transpose() method. However, It is not working for "ExprMulElement". import mosek.fusion as * # Create a model M = Model() # Example dimensions N, C = 4, 3 # Define a variable (N x C matrix) X = M.variable([N, C]) A = np.random.rand(N, C) Y = Expr.mulElm(A, X) # Transpose the matrix (C x N) Y_transpose = Y.transpose() The error is this. AttributeError: 'ExprMulElement' object has no attribute 'transpose' How can I transpose an "ExprMulElement" object? Continue reading...