<?xml version=“1.0” encoding=“UTF-8”?> <xs:schema xmlns:xs=“www.w3.org/2001/XMLSchema

        xmlns:m="http://www.w3.org/1998/Math/MathML"
        elementFormDefault="qualified"
        targetNamespace="http://www.w3.org/1998/Math/MathML">
<xs:include schemaLocation="mathml3-content.xsd"/>
<xs:include schemaLocation="mathml3-presentation.xsd"/>
<xs:include schemaLocation="mathml3-common.xsd"/>

</xs:schema>