Question

what is the name of the symbol that looks like an upside down u

Answer 1

n

Answer 2

laughing out loud

Answer 3

\(\huge \cap\)

Answer 4

U is the unison / union
Turned upside down, you're looking at intersection.

Answer 5

Sorry lol, it's union, the intersection of two sets.

Answer 6

Example:

Set 1 {1,2,3,4}
Set 2 {2,4}

The set of upside down U = {2,4}, because its the same in both X and Y.

Answer 7

I should have said SET X, and SET Y, I'm dumb.

Answer 8

Hey since you have posted this in Geometry group. I feel you're asking about geometry related right ?