<define name="math-math">

    <element name="math:math">

        <ref name="mathMarkup"/>

    </element>

</define>

<!-- To avoid inclusion of the complete MathML schema, anything -->

<!-- is allowed within a math:math top-level element            -->

<define name="mathMarkup">

    <zeroOrMore>

        <choice>

            <attribute>

                <anyName/>

            </attribute>

            <text/>

            <element>

                <anyName/>

                <ref name="mathMarkup"/>

            </element>

        </choice>

    </zeroOrMore>

</define>