View Compilation Error

852399_0_0_18240.cpp: In function `int main()':
852399_0_0_18240.cpp:425: error: no match for 'operator*' in 'mat_st * (&(&mat_g)->Matrix_Square::operator^((n + 2)))->Matrix_Square::operator-(((Matrix_Square&)(&mat_g)))'
852399_0_0_18240.cpp:144: note: candidates are: Matrix Matrix::operator*(Matrix&)
852399_0_0_18240.cpp:165: note:                 Matrix Matrix::operator*(double)
852399_0_0_18240.cpp:428: error: no match for 'operator*' in 'mat_st * (&mat_g)->Matrix_Square::operator*(#`float_expr' not supported by dump_expr#<expression error>)'
852399_0_0_18240.cpp:144: note: candidates are: Matrix Matrix::operator*(Matrix&)
852399_0_0_18240.cpp:165: note:                 Matrix Matrix::operator*(double)