he pointer by
                        <math overflow="scroll">

                            <mrow>
                                <mi mathvariant="italic">j</mi>
                                <mo>⁢</mo>
                                <mi mathvariant="italic">m</mi>
                            </mrow>
                        </math>
                        components or indices,
                        where
                        <math overflow="scroll"><mi mathvariant="italic">m</mi></math>
        