At this point, if one is working in a digital medium where one maybe have a blissful disregard for line length, one may happily continue onwards to tttttttten up past.. errmm.. tttttttten x tttttttten and beyond. However, if writing for the printed page, we may be force into a sadly more parsimonious form:
up to and progressively beyond
Negatives are most naturally treated in this system by simply reversing their positive representations, thus:
If o must be disambiguated from it's negation, positive o may be indicated as .o and negative as o.
The denotation of the null quantity is still a somewhat controversial topic, with many advocating for ., but a vocal minority are still strong proponents of: