May 26, 2018
The MathML XML Schema
This is the home of the MathML 2.0 XML Schema from the MathML Working Group.
All the details needed to use it should be covered in appendix A of MathML 2.0, 2nd edition
This schema is not normative. It is only provided as a tool to validate MathML instances, without any guarantee on the accuracy of the results. This version will be updated gradually to incorporate corrections or changes.