By default the Author Component Web Applet project does not come with the libraries necessary for viewing MathML equations in the Author page.
<jar href="lib/jcip-annotations.jar"/> <jar href="lib/jeuclid-core.jar"/> <jar href="lib/batik-all-1.7.jar"/> <jar href="lib/commons-io-1.3.1.jar"/> <jar href="lib/commons-logging-1.0.4.jar"/> <jar href="lib/xmlgraphics-commons-1.4.jar"/>
These additional libraries can be copied to the component project lib directory from an OXYGEN_INSTALLATION_DIRECTORY/lib directory.
In order to have the DITA with MathML specialization fully operational to edit specialized DITA Composite with MathML content you also have to include in the frameworks bundled with the component frameworks.zip.jar the entire OXYGEN_INSTALLATION_DIRECTORY/frameworks/mathml2 Mathml2 framework directory which is used to solve references to MathML DTDs.