Good day, Mary.
Thank you for your question.
In short, no.
The vectors in your example are the lowercase, bold letters. A vector is a single quantity–often denoted by one letter–having direction as well as magnitude.
The pairs of capital letters with a single-barb right-pointing arrow are line segments. And I believe your Nemeth Code notation for those with the arrows is spot on (for example: _% “,p,q<$33@o] _:)
Please let us know if you need anything more or different.
–Kyle