                            <mo>Δ</mo>
                            <mi mathvariant="italic">x</mi>
                        </mrow>
                    </mfenced>
                    <mo>&gt;=</mo>
                    <mfenced open="∣" close="∣">
                        <mrow>
                            <mo>Δ</mo>
                            <mi mathvariant="italic">y</mi>
                        </mrow>
                    </mfenced>
                </mrow>
            </math>,
            <span clas