2.1.54 [HTML5] Section 4.7.14 MathML

V0129: The math element is not supported

The specification states:

 ... MathML
     The math element from the MathML namespace falls into the embedded content, phrasing 
     content, ... flow content ... categories for the purposes of the content models in 
     this specification.

All document modes (All versions)

The math element is not supported.