The infinity sign is called the lemniscate.
No, because there are an infiite number of sets that contain -5. For example {-5, 8}, which does not even have a name.
It is called the minus sign. - .
& is called the ampersand.
it's called the radical sign
The infinity sign ∞ is sometimes called the lemniscate.
This can be called * A Plus sign * An Adding sign
A multiplication sign is commonly called an "asterisk" symbol (*).
a sign up or a sign in sheet/box
& is called the ampersand.
It is called an "ampersand."
equal sign (=)
Sign