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Myriagon
A myriagon, is a polygon with ten thousand sides, and cannot be visually distinguished from a circle. 
Littleo notation
Littleo notation is a notation representing the behavior of a limit of a function at a given value. The statement can be intuitively interpreted as saying that g(x) grows much faster than f 
Theta
Theta ( ) is a symbol used to denote the unknown measure of an angle. It is used mostly in displaying the trigonometric ratios of sine, cosine, and tangent. For example: This trigonometryrelated article contains minimal 
Inner product
An inner product is a map For the vectors 
Exterior algebra
Exterior algebra is a type of algebra characterized by the Wedge product and the Antiwedge product. A∧B is the wedge product of A and B which is a simple bivector or 2blade 
Arithmetic
Arithmetic, usually studied throughout elementary school, deals with subsets of the real number system (whole numbers, integers, and so forth), along with the accompanying operations of arithmetic that may be applied to them. "Higher arithmetic 
Total derivative
A total derivative of a multivariable function of several variables, each of which is a function of another argument, is the derivative of the function with respect to said argument. it is equal to the 
Double factorial
The double factorial is an extension onto the normal factorial function. It is denoted with two exclamation points:. Do not confuse the double factorial for a factorial computed twice. 
Proof of Chebyshev's inequality
In English: "The probability that the outcome of an experiment with the random variable will fall more than standard deviations beyond the mean of,, is less than." Or: "The proportion of the total area under 
Midrange
The midrange is infrequently used and hardly known. It is a relatively straightforward measure of central tendency. It is merely the arithmetic mean amongst the data subset including only the minimum and maximum values 
Secondary school mathematics
Secondary school mathematics consists of mathematics typically taught in middle schools (a.k.a., junior high schools) and high schools (or secondary schools) — that is, roughly ages 11–17. It is preceded by primary school 
Derivative formulas
The derivative of any polynomial function of one variable is easily obtained. If (or a constant function) and are both differentiable on some set, then so are,, and. If, in addition, is nonzero on, then 
LeviCivita symbol
The LeviCivita symbol, represented as ε, is a threedimensional array (it is not a tensor because its components do not change with a change in coordinate system), each element of which is 1 
Unit number
The unit number is, in simplest terms, the basis upon which all other numbers are defined. In the real numbers (and all number systems contained within the reals), this unit is 1. 
Primary school mathematics
Primary school mathematics consists of mathematics taught in primary, or elementary, schools — that is, roughly ages 5–10. It is followed by secondary school mathematics. Note that the usage of the term primary education is 
Inverse Factorial!
Factorial: x!=y, 3!=3*2*1=6 Inverse Factorial: x=inv!(y), inv!(6)=3 
Prerequisites for calculus
Prerequisites for calculus include courses typically called Algebra I (elementary algebra) and Algebra II (intermediate algebra), elementary geometry as well as an introductory analysis course usually called precalculus. The topics from those courses that are 
Square Root of N Is Irrational If N Isn't a Perfect Square
Proof that the square root of any nonsquare number is irrational. First let's look at the proof that the square root of 2 is irrational. First, let's suppose that the square root 
Coordinate space
A coordinate space is a space in which an ordered list of coordinates, each from a set (not necessarily the same set), collectively determine an element (or point) of the space – in short, a space 
Permille
Permille (also written "permill", "per mil", and other variations) represents a portion of a whole in parts per 1000, just as percent represents parts per 100. It is denoted by the symbol ‰ (like the percent 
The Date Game
The Date Game is a solitary recreational mathematics game. The object of the game is to use the digits from the date to create equations for all the numbers from 0100. A few rules 
Conjugate pair
Particularly in the realm of complex numbers and irrational numbers, and more specifically when speaking of the roots of polynomials, a conjugate pair is a pair of numbers whose product is an expression of real 
Product operator
The product operator multiplies the terms of a sequence or partial sequence. It is denoted as Any infinite product of an will converge to a nonzero real number if and only if 
Survey of mathematics
Survey of mathematics is the name used for some elective mathematics classes at the high school level or courses for nonmajors in college. It typically covers a wide array of topics that are accessible 
Triangle
A triangle or trigon is a two dimensional geometric object that has the specific qualities of having three straight sides that intersect at three vertices. The sum of the internal angles that exist at the
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The Official Terraria Wiki is a comprehensive resource containing information about all versions of ReLogic's actionadventure sandbox game, Terraria.