i don't really know to be honest...
i know that a derived property follows from a definition;
(a definition is a minimum set of conditions needed to describe something)
See the attached link, from Wikipedia about the theta function.
Maths is not an acronym, so the "a" does not intentionally represent a word or other linguistic entity. It is a contraction of "mathematics", which is derived from a combination of the greek and latin for study, learning, studiousness and science.
A expression in maths is a collection of terms without an equality sign.
Its maths
"tenth"
division
What symbol
mean no
circle
direction
Adding
Related to.