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Field of fractions
Every integral domain can be embedded in a field (see proof below). That is, using concepts from set theory, given an arbitrary integral domain (such as the integers), one can construct a field that contains 
Math Wiki
Welcome to the Math Wiki. As Wikipedia administrators are so fond of saying: "Wikipedia is not a textbook". Math Wiki, on the other hand, is a textbook. We are currently working on 1,240 articles 
Wedge product
The Wedge product is the multiplication operation in exterior algebra. The wedge product is always antisymmetric, associative, and anticommutative. The result of the wedge product is known as a bivector; in (that is, three 
Tau (constant)
The Greek letter τ, (tau) is a suggested symbol for the circle constant representing the ratio between circumference and radius. The constant is equal to (2 times pi), and approximately. While there are infinitely many 
Pi (constant)
The mathematical constant π (Greek pi) is commonly used in mathematics. It is also known as Archimedes' constant. Pi is an irrational number. Furthermore, it is a transcendental number. 
Brahmagupta
Brahmagupta ( listen (help·info)) (598–668) was an Indian mathematician and an astronomer. Brahmagupta, whose father was Jisnugupta, wrote important works on mathematics and astronomy. In particular he wrote Brahmasphutasiddhanta (The Opening of the Universe 
NonEuclidean geometry
In mathematics, nonEuclidean geometry describes hyperbolic and elliptic geometry, which are contrasted with Euclidean geometry. The essential difference between Euclidean and nonEuclidean geometry is the nature of parallel lines. Euclid's fifth postulate 
History of mathematics
The area of study known as the history of mathematics is primarily an investigation into the origin of discoveries in mathematics and, to a lesser extent, an investigation into the standard mathematical methods and notation 
Ordinal Number
This article is about the mathematical concept. For number words denoting a position in a sequence ("first", "second", "third", etc.), see Ordinal number (linguistics). In set theory, an ordinal number, or just ordinal, is the 
Hexadecimal
Template:Numeral systems In mathematics and computer science, hexadecimal (also base Template:Num, or hex) is a positional numeral system with a radix, or base, of 16. It uses sixteen distinct symbols, most often the 
Binomial coefficient
In mathematics, the binomial coefficient is the coefficient of the term in the polynomial expansion of the binomial power. In combinatorics, is interpreted as the number of element subsets (the combinations) of an element set 
History of calculus
Calculating volumes and areas, the basic function of integral calculus, can be traced back to the Moscow papyrus (c. 1820 BC), in which an Egyptian mathematician successfully calculated the volume of a pyramidal frustum. Greek 
Law of cosines
This article is about the law of cosines in Euclidean geometry. For the corresponding theorem in spherical geometry, see law of cosines (spherical). For the corresponding theorem in hyperbolic geometry, see law of cosines (hyperbolic 
Sphere
A sphere (from Greek σφαίρα — sphaira, "globe, ball," ) is perfectly round geometrical object in threedimensional space, such as the shape of a round ball. Like a circle in two dimensions, a perfect sphere is 
Statistics
For MathWiki statistics, see Special:Statistics and Special:WikiStats. Statistics is a broad mathematical discipline which studies ways to collect, summarize, and draw conclusions from data. It is applicable to a wide variety of academic 
Polygon
In geometry, a polygon is a plane figure bounded by a finite sequence of line segments, a twodimensional polytope. The line segments that make up the polygon are called sides; their intersections are called 
Icosahedron
In geometry, an icosahedron (Greek: eikosaedron, from eikosi twenty+ hedron seat;/ˌaɪ.kəʊ.sə.ˈhi.dɹən/; plural: drons, dra/dɹə/) is any polyhedron having 20 faces, but usually a regular icosahedron is implied, which has 
Orthogonal projection
For the orthographic projection as a map projection, see Orthographic projection in cartography. Template:Views Orthographic projection (or orthogonal projection) is a means of representing a threedimensional object in two dimensions. It is a 
Dodecahedron
A dodecahedron (Greek δωδεκάεδρον, from δώδεκα'twelve'+ εδρον'base','seat' or'face') is any polyhedron with twelve faces, but usually a regular dodecahedron is meant: a Platonic solid composed of twelve regular pentagonal faces, with 
Equilateral triangle
In geometry, an equilateral triangle is a triangle in which all three sides are equal. In traditional or Euclidean geometry, equilateral triangles are also equiangular; that is, all three internal angles are also congruent to 
Ellipsoid
An ellipsoid is a type of quadric surface that is a higher dimensional analogue of an ellipse. The equation of a standard axisaligned ellipsoid body in an xyzCartesian coordinate system is where ax 
Boolean logic
Boolean logic is a complete system for logical operations. It was named after George Boole, an English mathematician at University College Cork who first defined an algebraic system of logic in the mid 19th century 
Special right triangles
A special right triangle is a right triangle with some regular feature that makes calculations on the triangle easier, or for which simple formulas exist. For example, a right triangle may have angles that form 
Cross product
The cross product is one way of taking the product of two vectors (the other being the dot product). This method yields a third vector perpendicular to both. Unlike the dot product, it is only 
Gamma function
The gamma function is an analytic continuation of the factorial function in the entire complex plane. It is commonly denoted as. The Gamma function is meromorphic and it satisfies the functional equation. There exists another
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The Terraria Wiki is a comprehensive resource containing information about all versions of ReLogic's actionadventure sandbox game, Terraria.