The only "mathematical" (it's really more geometrical) symbol I can think of fitting the description means "perpendicular."
The Upside down T symbol indicates perpendicular lines.
It is the symbol for 'perpendicular'.
T in the metric unit of weight is ton.
It say "368 milliliters down" which in slang means that your lightweight. Jamie T says a lot that he is a light weight
You normally multiply a number by another number
The Upside down T symbol indicates perpendicular lines.
It is the symbol for 'perpendicular'.
Upside-down T
A symbol is something that stands for or represents an idea, quality, condition, or other abstraction.
centered
The book Upside Down in the Middle of Nowhere by Julie T. Lamana has 320 pages.
An upside down T.
A centered tab stop
like a T with an upside down tear on it
It looks like an upside-down "T".
They look like an upside-down "T".
You turn Upside down.