arger
            mipmap level. (In the case of rectangular images, the decimation will ultimately
            reach an
            <math overflow="scroll">

                <mrow>
                    <mi mathvariant="italic">N</mi>
                    <mo>×</mo>
                    <mn>1</mn>
                </mrow>
            </math>
            or
            <math overflow="scroll">

                <mrow>
                    <mn>1</mn>
                    <mo>×</mo>
                    <mi mathvaria