1) + = Addition
2) - = Subtraction
3) × = Multiply
4) ÷ = Divided
5) % = Percentage
6) ∵ = Since
7) ∴ = Therefore
8) ∆ = Triangle
9) ⇒ = Implies
10) ∞ = Infinity
11) π = Pi
12) ω = Omega
13) ° = Degree
14) ⊥ = Perpendicular
15) θ = Theta
16) φ = Psi
17) β = Beta
18) = = Equal
19) ≠ = Not equal
20) √ = Square root
21) ? = Question mark
22) α = Alpha
23) ∥ = Parallel
24) ~ = Identical
25) : = Ratio
26) : : = Proportion
27) ^ = And
28) ! = Factorial
29) f = Function
30) @ = At the rate
31) ; = such as
32) / = Per
33) ( ) = Parentheses
34) { } = Curly brackets
35) [ ] = Square Brackets
36) > = Greater-than
37) < = Less-than
38) ≈ = Approx.
39) ³√ = Cube root
40) Ï„ = Tau
41) ≌ = Congruent
42) ∀ = For all
43) ∃ = Exist
44) ∄ = There does not exist
45) ∠ = Angle
46) ∑ = Sigma
47) ψ = Sai
48) δ = Delta
49) λ = Lambda
50) ∦ = Not parallel
51) ≁ = Not Equivalent
52) d/dx = Differentiation
53) ∩ = Intersection of sets
54) ∪ = Union of sets
55) iff = Only and only if
56) ∈ = Belongs to
57) ∉ = Not belong to
58) def = Definition
59) μ = Mu
60) ∫ = Integration
61) ⊂ = Subset
62) ↔ = Equivalent
63) i = Modulus
64) ' = Minute
65) " = Second