What does B stand for in math?

Mathematical symbols What it is Sample expression Proper subset symbol A B Union symbol A B = B A Intersection symbol A B = B A Null symbol = { } 62 more rows

techtarget.com - Mathematical Symbols - TechTarget

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Symbol What it is How it is read How it is used Sample expression

Logical OR symbol ... plus ...

... or ... Sum of a few values

Logical disjunction 3 + 5 = 8

¬(A + B) = ¬A * ¬B

* Multiplication sign

Logical AND symbol ... times ...

... and ... Product of two values

Logical conjunction 3 x 5 = 15

¬(A * B) = ¬A + ¬B

x Multiplication sign ... times ... Product of two values 3 x 5 = 15 · Multiplication sign ... times ... Product of two values 3 · 5 = 15

summation sign The summation of ... Sum of many or

infinitely many values

Integral sign The integral of ... integration x2 dx = x3/3 + c

Double integral sign The double integral of ... integration f(x,y) dx dy

Triple integral sign The triple integral of ... integration f(x,y,z) dx dy dz

Line integral sign The line integral of ... integration F dx

Surface integral sign The surface integral of ... integration F(x,y,z) dx dy

- Subtraction sign

Minus sign ... minus ...

Negative... Difference of two values,

negative number 3 - 5 = -2

± Plus/minus sign ... plus or minus ... Expression of range,

error, or tolerance 500 kbps ± 10%

dot product sign ... dot ... Scalar (dot) product

of two vectors A B = B A

x Cross product sign ... cross ... Vector (cross) product

of two vectors A x B = - (B x A)

Product sign The product of ... Product of three up to

infinitely many values

^ Carat ... to the power of ... exponent 2 ^ 5 = 32

! Exclamation ... factorial Product of all positive

integers up to a

certain value 5! = 120

Surd ... root of ... Algebraic expressions z = (x + y)

Square root symbol The square root of ... Algebraic expressions

... Continuation sign ... and so on up to ...

... and so on indefinitely Extension of sequence S = {1, 2, 3, ...}

/ Slash ... divided by ...

... over ... Division 3/4 = 0.75

÷ Division sign ... divided by ... Division 3 ÷ 4 = 0.75

Percent symbol ... percent ... Proportion 0.032 = 3.2

Per mil symbol ... per mil ... Proportion 0.032 = 32

: Colon,

ratio sign ... is to ...

... such that ...

... it is true that ... Division or ratio,

symbol following

logical quantifier or

used in defining a set 2:4 = 20:40 x : x > 4 and x < 5 x : x < 0 or x > -1 S = {x : x < 3}

| Vertical line ... such that ...

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...it is true that ... Symbol following

logical quantifier or

used in defining a set x | x > 4 and x < 5 x | x < 0 or x > -1 S = {x | x < 3} :: Double colon ... averaged with ... arithmetic mean 3 :: 11 = 7

lemniscate ... infinity

... increases without limit Infinite summations

Infinite sequence

Limit x : x <

( ) Parentheses ...quantity...

...list...

...set of coordinates...

...open interval Denotes a quantity, list,

set of coordinates, or an

open interval (x + y) + z

(a 1 , a 2 , a 3 , a 4 )

(x,y,z)

(3,5)

[ ] Square brackets ... the quantity ...

... the closed interval ... Denotes a quantity or a

closed interval w + [(x + y) + z]

[3,5]

( ] Hybrid brackets ... the half-open interval ... Denotes a

half-open interval (3,5]

[ ) Hybrid brackets ... the half-open interval ... Denotes a

half-open interval [3,5)

{ } Curly brackets ... the quantity ...

... the SET ... Denotes a quantity or a SET E = {2, 4, 6, 8, ...}

= Equal sign ... equals ... Indicates two values

are the same -(-5) = 5

2z2 + 4z - 6 = 0

proportionality sign ... is proportional to ... Indicates two variables

change in direct proportion x y

~ Similarity sign ... is similar to ... Indicates two objects are

geometrically similar ABC ~ DEF

Approximate

equal sign ... is approximately equal to ... Indicates two values are

close to each other x + y z

Inequality sign ... is not equal to ... Indicates two values

are different x y

< Inequality sign ... is less than ... Indicates value on left

is smaller than

value on right 3 < 5

x < y

Inequality sign ... is less than or equal to ...

... is at most equal to ... Indicates value on left

is smaller than or equal to

value on right x y

> Inequality sign ... is greater than ... Indicates value on left

is larger than

value on right 5 > 3

x > y

≥ Inequality sign ... is greater than or equal to ... Indicates value on left

is larger than or equal to

value on right x ≥ y

| | absolute value sign The absolute value of ... Distance of value from

origin in number line,

plane, or space | -3 | = 3

increment sign,

Triangle symbol the change in ...

triangle ... Indicates a small change,

Denotes vertices of triangle m = y / x

ABC = DEF

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Perpendicularity

symbol ... is perpendicular to ... Geometry L M

// Parallel symbol ... is parallel to ... Geometry L // M

Angle symbol Angle ... Geometry ABC = DEF

Existential quantifier For some ...

There exists a(n) ... Logical statements x : x > 4 and x < 5

Universal quantifier For all ...

For every ... Logical statements x : x < 0 or x > -1

¬ Logical negation

symbol not ... Logical statements ¬(¬A) A

logical implication

symbol ... implies ...

If ... then ... Logical statements A B

logical equivalence

symbol ... is logically equivalent to ...

... if and only if .. Logical statements A B

Three dots ... therefore ...

... it follows that ... Logical statements or

mathematical proofs x = y and y = z

x = z

Element-of

symbol ... is an element of

a set ... Sets a A

Not-element-of

symbol ... is not an element of

a set ... Sets b A

Subset symbol ... is a subset of ... Sets A B

Proper subset symbol ... is a proper subset of ... Sets A B

Union symbol ... union ... Sets A B = B A

Intersection symbol ... intersect ...

... intersected with ... Sets A B = B A

Null symbol The null set

The empty set Sets = { }

Hebrew aleph

(uppercase) Aleph ... Transfinite cardinal 1 + 0 = 1

º Degree symbol ... degree(s) Angular measure

Temperature T = +20 ºC

θ Greek theta

(lowercase) ... theta ... Angular variable θ = 90º

φ Greek phi

(lowercase) ... phi ... Angular variable = 45º

λ Greek lambda

(lowercase) ... lambda ... Wavelength

Ratio

Eigenvalue

Lebesgue measure = 70 cm

= 3:1

µ Greek mu

(lowercase) micro- (10-6) Prefix multiplier C = 0.001 µF

Greek pi

(lowercase) ... pi ... General science 3.14159

Greek omega

(uppercase) ... omega ... Volume of an object

Ohms (resistance) R 2 = 330

Greek omega

(lowercase) ... omega ... Transfinite ordinal

Angular velocity

Period = 36,000 rad/s

= 1/60 s

, N Enhanced or bold N The set of natural numbers Number theory

Set theory = {0, 1, 2, 3, ...}

, Z Enhanced or bold Z The set of integers Number theory

Set theory = {0, 1, -1, 2, -2, 3, -3, ...}

, Q Enhanced or bold Q The set of rational numbers Number theory

Set theory = {a/b | a and b are in }

techtarget.com - Mathematical Symbols - TechTarget

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