Natural numbers = n
Integers = Z
Whole numbers = w
real numbers = R
Rational numbers =p/q where q is not equal to zero.
You can refer to the following for future requirement
List of Mathematical Symbols
a) R = real numbers,
b) Z = integers,
c) N=natural numbers,
d) Q = rational numbers,
e) P = irrational numbers.
f) ⊂ = proper subset (not the whole thing)
g) ⊆ =subset
h) ∃ = there exists
i) ∀ = for every
j) ϵ = element of
k) S = union (or)
l) T = intersection (and)
m) s.t.= such that
n) = ⇒ implies
o) ⇐⇒ if and only if
p) P = sum
q) = set minus
r) ∴= therefore