Learning English With Mathematic
A.
Mathematical Symbols
Math symbols
|
Meaningful mathematics statement
|
Math symbols
|
Meaningful mathematics statement
|
≡
|
identically equal
|
¥
|
an infinity sign
|
≅
|
congruent with
|
x ∈ X
|
an element x belongs to a set X
|
∼
|
approximately
|
x
∉ X
|
an element x doesn’t belong to a set X
|
≠
|
not equal to
|
X ⊂ Y
|
a set X is a subset of a set Y
|
≤
|
less than or equal to
|
X ∪ Y
|
a union of sets X and Y
|
≥
|
greater than or equal to
|
X ∩ Y
|
an intersection of sets X and Y
|
∧
|
logical and
|
+
|
plus sign/added by
|
∨
|
logical or
|
-
|
minus sign/subtracted by
|
∀
|
for all
|
´
|
multiplication/multiplied
by
|
∃
|
there exists
|
¸
|
division/divided
by
|
Σ
|
n-ary summation
|
Ö
|
square
root/radical sign
|
Ð
|
Angle
|
^
|
orthogonal
to/perpendicular
|
N
|
the set of natural numbers
|
p
|
pi
= 3,14159…
|
Z
|
the set of whole numbers (integers)
|
!
|
factorial
|
R
|
the set of real numbers
|
∫
|
integral
|
Æ
|
an empty set
|
[a,b]
|
a
numerical sign
|
B.
How to say number and symbols
