The Upside down T symbol indicates perpendicular lines.
It is the symbol for 'perpendicular'.
The only "mathematical" (it's really more geometrical) symbol I can think of fitting the description means "perpendicular."
That's a u
The 'upside down' triangle symbol is the (greek?) letter Nabla. Nabla means the gradient. The gradient is the vector field whoose components are the partial derivatives of a function F given by (df/dx, df/dy).
The Upside down T symbol indicates perpendicular lines.
It is the symbol for 'perpendicular'.
The only "mathematical" (it's really more geometrical) symbol I can think of fitting the description means "perpendicular."
That's a u
The upside down horseshoe symbol is of Greek origin and is used to calculate many different types of problems. The symbol expresses the unlucky nature of the problem at hand.
A symbol is something that stands for or represents an idea, quality, condition, or other abstraction.
The hazard lights.
The Japanese upside down symbol for freedom "自由" translates to "freedom" in English. It represents the idea of liberty and having the ability to act and choose without constraint.
Usually an upside down umbrella catching raindrops or tears is seen as a sign of compassion. In both Hinduism and Buddhism, umbrellas or parasols are a symbol of wisdom.
In Japanese, the upside-down "y" symbol ( リ ) represents the katakana character "ri." Katakana is one of the Japanese scripts used for writing loanwords and foreign names.
An upside down horseshoe is sometimes considered to be a symbol of bad luck as it is believed to let the luck spill out. In contrast, a right-side up horseshoe is thought to be a symbol of good luck and protection.
It's a symbol of Satanism if the butterfly is black.