# Symbols In Geometry 0 With Slash Through It Mean? Trig Identities

This list of commonly used mathematical symbols explains what each math symbol is, how it is used and provides a sample expression.

Đang xem: Geometry 0 with slash

 Symbol What it is How it is read How it is used Sample expression + Addition sign 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 x : x x > -1 S = {x : x …it is true that … Symbol following logical quantifier or used in defining a set x | x > 4 and x x | x x > -1 S = {x | x arithmetic mean 3 :: 11 = 7 lemniscate … infinity … increases without limit Infinite summations Infinite sequence Limit x : x …list… …set of coordinates… …open interval Denotes a quantity, list, set of coordinates, or an open interval (x + y) + z (a1, a2, a3, a4) (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 is smaller than value on right 3 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 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 For every … Logical statements x : x 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) R2 = 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 } , R Enhanced or bold R The set of real numbers Number theory Set theory What is the cardinality of ?
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