Message
mml:mn should not follow itself. mml:mn should contain the complete number. Do not separate digits into individual mml:mn tags. Numbers should be in a structure or separated by operators.
Rule XPath:
This rule ASSERTS the following, raising an alert if FALSE:
not(following-sibling::*[1][self::mml:mn])
or (following-sibling::*[1][self::mml:mn] and (@mathvariant, 'none')[1] ne (following-sibling::*[1][self::mml:mn]/@mathvariant,
'none')[1])
or (parent::mml:mfrac | parent::mml:mroot | parent::mml:msub | parent::mml:msup |
parent::mml:munder | parent::mml:mover | parent::mml:munderover | parent::mml:msubsup
| parent::mml:mmultiscripts | parent::mml:mfenced[@separators] )