mathematical symbols list
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7/3/13 Mathematical symbols list (+,-,x,,=,,...)
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Mathematical SymbolsList of all mathematical symbols and signs - meaning and examples.
Basic math symbols
Geometry symbols
Algebra symbols
Probability & statistics symbols
Set theory symbols
Logic symbols
Calculus & analysis symbols
Number symbols
Greek symbols
Roman numerals
Basic math symbols
SymbolSymbol
NameMeaning / definition Example
= equals sign equality 5 = 2+3
not equalsign inequality 5 4
>strict
inequalitygreater than 5 > 4
< strictinequality less than 4 < 5
inequality greater than or equal to 5 4
inequality less than or equal to 4 5
( ) parentheses calculate expression inside first 2 (3+5) = 16
[ ] brackets calculate expression inside first [(1+2)*(1+5)] = 18
+ plus sign addition 1 + 1 = 2
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7/3/13 Mathematical symbols list (+,-,x,,=,,...)
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minus sign subtraction 2 1 = 1
plus - minus both plus and minus operations 3 5 = 8 and -2
minus - plus both minus and plus operations 3 5 = -2 and 8
* asterisk multiplication 2 * 3 = 6
times sign multiplication 2 3 = 6
multiplicationdot
multiplication 2 3 = 6
division sign
/ obelusdivision 6 2 = 3
/ divisionslash
division 6 / 2 = 3
horizontal
linedivision / fraction
mod modulo remainder calculation 7 mod 2 = 1
. period decimal point, decimal separator 2.56 = 2+56/100
a b power exponent 23 = 8
a^b caret exponent 2 ^ 3 = 8
a square root a a = a 9 = 3
3a cube root 3a 3a 3a = a 38 = 2
4a fourth root 4a 4a 4a 4a = a 416 = 2
nan-th root
(radical) for n=3, n8 = 2
% percent 1% = 1/100 10% 30 = 3
per-mille 1 = 1/1000 = 0.1% 10 30 = 0.3
ppm per-million 1ppm = 1/1000000 10ppm 30 = 0.0003
ppb per-billion 1ppb = 1/1000000000 10ppb 30 = 310-7
ppt per-trillion 1ppb = 10-12 10ppb 30 = 310-10
http://www.rapidtables.com/math/symbols/Minus_Sign.htmhttp://www.rapidtables.com/math/symbols/Times_Sign.htmhttp://www.rapidtables.com/math/symbols/Times_Sign.htmhttp://www.rapidtables.com/math/symbols/Times_Sign.htmhttp://www.rapidtables.com/math/symbols/Division_Sign.htmhttp://www.rapidtables.com/math/symbols/Division_Sign.htmhttp://www.rapidtables.com/math/symbols/Division_Sign.htmhttp://www.rapidtables.com/math/number/Percentage.htmhttp://www.rapidtables.com/math/number/Per_mille.htmhttp://www.rapidtables.com/math/number/PPM.htmhttp://www.rapidtables.com/math/number/PPM.htm
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7/3/13 Mathematical symbols list (+,-,x,,=,,...)
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Geometry symbols
Symbol Symbol Name Meaning / definition Example
angle formed by two rays ABC = 30
measured angle ABC = 30
spherical angle AOB = 30
right angle = 90 = 90
degree 1 turn = 360 = 60
arcminute 1 = 60 = 6059'
arcsecond 1 = 60 = 6059'59''
line infinite line
AB line segment line from point A to point B
ray line that start from point A
arc arc from point A to point B = 60
| perpendicular perpendicular lines (90 angle) AC | BC
|| parallel parallel lines AB || CD
congruent to equivalence of geometric shapes andsize ABC XYZ
~ similarity same shapes, not same size ABC ~ XYZ
triangle triangle shape ABC BCD
|x-y| distance distance between points x and y | x-y | = 5
pi constant = 3.141592654...
is the ratio between the circumference and
diameter of a circle
c = d = 2r
rad radians radians angle unit 360 = 2 rad
grad grads grads angle unit 360 = 400 grad
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7/3/13 Mathematical symbols list (+,-,x,,=,,...)
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Algebra symbols
Symbol Symbol Name Meaning / definition Example
x x variable unknown value to find when 2x = 4, then x = 2
equivalence identical to
equal bydefinition
equal by definition
:= equal bydefinition equal by definition
~approximately
equalweak approximation 11 ~ 10
approximately
equalapproximation sin(0.01) 0.01
proportional to proportional to f(x) g(x)
lemniscate infinity symbol
much less than much less than 1 1000000
much greaterthan
much greater than 1000000 1
( ) parentheses calculate expression inside first 2 * (3+5) = 16
[ ] brackets calculate expression inside first [(1+2)*(1+5)] = 18
{ } braces set
x floor brackets rounds number to lowerinteger
4.3= 4
x ceiling brackets rounds number to upperinteger 4.3= 5
x! exclamationmark factorial 4! = 1*2*3*4 = 24
| x |single vertical
barabsolute value | -5 | = 5
f (x) function of x maps values of x to f(x) f (x) = 3x+5
(f g)function
composition(f g) (x) = f (g(x))
f (x)=3x, g(x)=x-1 (f g)
(x)=3(x-1)
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(a,b) open interval (a,b) = {x | a < x < b} x (2,6)
[a,b] closed interval [a,b] = {x | a x b} x [2,6]
delta change / difference t = t1 - t0
discriminant = b2 - 4ac
sigma summation - sum of all valuesin range of series xi= x1+x2+...+xn
sigma double summation
capital pi product - product of all valuesin range of series xi=x1x2...xn
ee constant /
Euler's numbere = 2.718281828... e = lim (1+1/x)x , x
Euler-
Mascheroni
constant
= 0.527721566...
golden ratio golden ratio constant
pi constant
= 3.141592654...
is the ratio between the
circumference and diameter of a
circle
c = d = 2r
Linear Algebra Symbols
Symbol Symbol Name Meaning / definition Example
dot scalar product a b
cross vector product a b
AB tensor product tensor product of Aand B
A B
inner product
[ ] brackets matrix of numbers
( ) parentheses matrix of numbers
determinant of matrix
http://www.rapidtables.com/math/number/e_constant.htmhttp://en.wikipedia.org/wiki/Euler%E2%80%93Mascheroni_constant
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| A | determinant A
det(A) determinantdeterminant of matrix
A
|| x || double vertical bars norm
A T transpose matrix transpose (AT)ij = (A)ji
A Hermitian matrixmatrix conjugate
transpose (A)ij = (A)ji
A * Hermitian matrixmatrix conjugate
transpose(A*)ij = (A)ji
A -1 inverse matrix A A-1 = I
rank(A) matrix rank rank of matrix A rank(A) = 3
dim(U) dimension dimension of matrix A rank(U) = 3
Probability and statistics symbols
Symbol Symbol Name Meaning / definition Example
P(A) probabilityfunction
probability of event A P(A) = 0.5
P(A B)probability of
events
intersection
probability that of
events A and BP(AB) = 0.5
P(A B)probability of
events union
probability that of
events A or BP(AB) = 0.5
P(A | B)conditional
probability
function
probability of event A
given event B occuredP(A | B) = 0.3
f (x)probability
density function
(pdf)
P(a x b) = f (x)
dx
F(x)cumulative
distribution
function (cdf)
F(x) = P(X x)
population meanmean of population
values = 10
expectation expected value of
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E(X) value random variable X E(X) = 10
E(X | Y) conditionalexpectation
expected value of
random variable X
given Y
E(X | Y=2) = 5
var(X) variancevariance of random
variable Xvar(X) = 4
2 variance variance of populationvalues
2 = 4
std(X)standard
deviation
standard deviation of
random variable Xstd(X) = 2
Xstandard
deviation
standard deviation
value of random
variable X
X = 2
medianmiddle value of
random variable x
cov(X,Y) covariance covariance of randomvariables X and Y
cov(X,Y) = 4
corr(X,Y) correlationcorrelation of random
variables X and Ycorr(X,Y) = 0.6
X,Y correlationcorrelation of random
variables X and YX,Y = 0.6
summationsummation - sum of all
values in range of
series
doublesummation
double summation
Mo modevalue that occurs most
frequently in
population
MR mid-range MR = (xmax+xmin)/2
Md sample median half the population isbelow this value
Q1lower / first
quartile
25% of population are
below this value
Q2median / second
quartile
50% of population are
below this value =
median of samples
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Q3upper / third
quartile
75% of population are
below this value
x sample meanaverage / arithmetic
meanx = (2+5+9) / 3 = 5.333
s 2 sample variance
population samples
variance estimator s 2 = 4
ssample standard
deviation
population samples
standard deviation
estimator
s = 2
zx standard score zx = (x-x) / sx
X ~ distribution of Xdistribution of random
variable XX ~ N(0,3)
N(,2)normal
distributiongaussian distribution X ~ N(0,3)
U(a,b)uniform
distribution
equal probability in
range a,b X ~ U(0,3)
exp()exponential
distributionf (x) = e-x , x0
gamma(c, )gamma
distribution
f (x) = c xc-1e-x /
(c), x0
2(k)chi-square
distribution
f (x) = xk/2-1e-x/2 / (
2k/2 (k/2) )
F (k1, k2) F distribution
Bin(n,p)binomial
distribution
f (k) = nCk pk(1-p)n-
k
Poisson()Poisson
distribution f (k) = ke- / k!
Geom(p)geometric
distributionf (k) = p (1-p) k
HG(N,K,n)hyper-geometric
distribution
Bern(p)Bernoulli
distribution
Combinatorics Symbols
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7/3/13 Mathematical symbols list (+,-,x,,=,,...)
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Symbol Symbol
NameMeaning / definition Example
n! factorial n! = 123...n 5! = 12345 = 120
nPk permutation 5P3 = 5! / (5-3)! = 60
nCk
combination 5C3 = 5!/[3!(5-3)!]=10
Set theory symbols
Symbol Symbol Name Meaning / definition Example
{ } set a collection of elementsA = {3,7,9,14},
B = {9,14,28}
A B intersectionobjects that belong to set
A and set BA B = {9,14}
A B union objects that belong to setA or set B
A B = {3,7,9,14,28}
A B subsetsubset has fewer
elements or equal to the
set
{9,14,28} {9,14,28}
A Bproper subset /
strict subset
subset has fewer
elements than the set{9,14} {9,14,28}
A B not subsetleft set not a subset of
right set{9,66} {9,14,28}
A B superset set A has more elementsor equal to the set B
{9,14,28} {9,14,28}
A Bproper superset /
strict superset
set A has more elements
than set B{9,14,28} {9,14}
A B not superset set A is not a superset ofset B
{9,14,28} {9,66}
2A power set all subsets of A
power set all subsets of A
A={3,9,14},
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A = B equality both sets have the samemembers
B={3,9,14},
A=B
Ac complementall the objects that do not
belong to set A
A \ Brelative
complement
objects that belong to A
and not to B
A = {3,9,14},
B = {1,2,3},
A-B = {9,14}
A - B relativecomplement
objects that belong to A
and not to B
A = {3,9,14},
B = {1,2,3},
A-B = {9,14}
A Bsymmetric
difference
objects that belong to A or
B but not to their
intersection
A = {3,9,14},
B = {1,2,3},
A B = {1,2,9,14}
A Bsymmetric
difference
objects that belong to A or
B but not to their
intersection
A = {3,9,14},
B = {1,2,3},
A B = {1,2,9,14}
aA element of set membership A={3,9,14}, 3 A
xA not element of no set membership A={3,9,14}, 1 A
(a,b) ordered pair collection of 2 elements
AB cartesian productset of all ordered pairs
from A and B
|A| cardinality the number of elements ofset A
A={3,9,14}, |A|=3
#A cardinalitythe number of elements of
set AA={3,9,14}, #A=3
aleph-nullinfinite cardinality of
natural numbers set
aleph-onecardinality of countable
ordinal numbers set
empty set = { } C = {}
universal set set of all possible values
0
natural numbers
/ whole numbers
set (with zero)0 = {0,1,2,3,4,...} 0 0
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1
natural numbers
/ whole numbers
set (without zero)1 = {1,2,3,4,5,...} 6 1
integer numbers
set
=
{...-3,-2,-1,0,1,2,3,...}-6
rational numbers
set = {x | x=a/b, a,b
}2/6
real numbers set = {x | - < x
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for all
there exists
there does not exists
therefore
because / since
Calculus & analysis symbols
Symbol Symbol Name Meaning / definition Example
limit limit value of a function
epsilon represents a very smallnumber, near zero
0
ee constant / Euler's
numbere = 2.718281828...
e = lim (1+1/x)x ,
x
y ' derivative derivative - Leibniz's notation (3x3)' = 9x2
y '' second derivative derivative of derivative (3x3)'' = 18x
y(n) nth derivative n times derivation (3x3)(3) = 18
derivative derivative - Lagrange's notation d(3x3)/dx = 9x2
second derivative derivative of derivative d2(3x3)/dx2 = 18x
nth derivative n times derivation
time derivativederivative by time - Newton
notation
time second
derivativederivative of derivative
partial derivative (x2+y2)/x = 2x
integral opposite to derivation
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double integralintegration of function of 2
variables
triple integral integration of function of 3variables
closed contour /line integral
closed surfaceintegral
closed volume
integral
[a,b] closed interval [a,b] = {x | a x b}
(a,b) open interval (a,b) = {x | a < x < b}
i imaginary unit i -1 z = 3 + 2i
z* complex conjugate z = a+bi z*=a-bi z* = 3 + 2i
z complex conjugate z = a+bi z = a-bi z = 3 + 2i
nabla / del gradient / divergence operator f (x,y,z)
vector
unit vector
x * y convolution y(t) = x(t) * h(t)
Laplace transform F(s) = {f (t)}
Fourier transform X() = {f (t)}
delta function
lemniscate infinity symbol
Numeral symbols
Name European Roman Hindu Arabic Hebrew
zero 0
one 1 I
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two 2 II
three 3 III
four 4 IV
five 5 V
six 6 VI
seven 7 VII
eight 8 VIII
nine 9 IX
ten 10 X
eleven 11 XI
twelve 12 XII
thirteen 13 XIII
fourteen 14 XIV
fifteen 15 XV
sixteen 16 XVI
seventeen 17 XVII
eighteen 18 XVIII
nineteen 19 XIX
twenty 20 XX
thirty 30 XXX
fourty 40 XL
fifty 50 L
sixty 60 LX
seventy 70 LXX
eighty 80 LXXX
ninety 90 XC
one hundred 100 C
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Greek alphabet letters
Greek SymbolGreek Letter Name English Equivalent Pronunciation
Upper Case Lower Case
Alpha a al-fa
Beta b be-ta
Gamma g ga-ma
Delta d del-ta
Epsilon e ep-si-lon
Zeta z ze-ta
Eta h eh-ta
Theta th te-ta
Iota i io-ta
Kappa k ka-pa
Lambda l lam-da
Mu m m-yoo
Nu n noo
Xi x x-ee
Omicron o o-mee-c-ron
Pi p pa-yee
Rho r row
Sigma s sig-ma
Tau t ta-oo
Upsilon u oo-psi-lon
Phi ph f-ee
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Chi ch kh-ee
Psi ps p-see
Omega o o-me-ga
Roman numerals
Number Roman numeral
0 not defined
1 I
2 II
3 III
4 IV
5 V
6 VI
7 VII
8 VIII
9 IX
10 X
11 XI
12 XII
13 XIII
14 XIV
15 XV
16 XVI
17 XVII
18 XVIII
19 XIX
20 XX
30 XXX
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40 XL
50 L
60 LX
70 LXX
80 LXXX
90 XC
100 C
200 CC
300 CCC
400 CD
500 D
600 DC
700 DCC
800 DCCC
900 CM
1000 M
5000 V
10000 X
50000 L
100000 C
500000 D
1000000 M
See also
Algebra symbols
Geometry symbols
Statistical symbols
Logic symbols
Set theory symbols
http://www.rapidtables.com/math/symbols/Algebra_Symbols.htmhttp://www.rapidtables.com/math/symbols/Geometry_Symbols.htmhttp://www.rapidtables.com/math/symbols/Statistical_Symbols.htmhttp://www.rapidtables.com/math/symbols/Logic_Symbols.htmhttp://www.rapidtables.com/math/symbols/Set_Symbols.htm
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Calculus & analysis symbols
Number symbols
Greek alphabet symbols
Roman numerals
Infinity symbol
Math calculators
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MATH SYMBOLS
Basic math symbols
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7/3/13 Mathematical symbols list (+,-,x,,=,,...)
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