Maths notation

All of the terms I need to know

{…}

a set of something

is an element of

is not an element of

is a subset of

is not a subset of

intersection with (and)

union with (or)

excluding

the null set or empty set

a set of three letters

an infinite set of ordered pairs

N

the set of natural numbers

Z

set of integers

Q

set of rational numbers

R

set of real numbers

R+

the set of positive real numbers

R-

the set of negative real numbers