From en.wikipedia.org:
[sum] SUM most commonly means the total of two or more numbers added together;
see addition.
SUM can also refer to:
[TOC right]
** Mathematics
- Sum (category theory) , the generic concept of summation in mathematics
- Sum, the result of summation , the addition of a sequence of numbers
- 3SUM , a term from computational complexity theory
- Band sum , a way of connecting mathematical knots
- Connected sum , a way of gluing manifolds
- Digit sum , in number theory
- Direct sum , a combination of algebraic objects
- Direct sum of groups
- Direct sum of modules
- Direct sum of permutations
- Direct sum of topological groups
- Einstein summation , a way of contracting tensor indices
- Empty sum , a sum with no terms
- Indefinite sum , the inverse of a finite difference
- Kronecker sum , an operation considered a kind of addition for matrices
- Matrix addition , in linear algebra
- Minkowski addition , a sum of two subsets of a vector space
- Power sum symmetric polynomial , in commutative algebra
- Prefix sum , in computing
- Pushout (category theory) (also called an amalgamated sum or a cocartesian square, fibered coproduct, or fibered sum), the colimit of a diagram consisting of two morphisms f : Z → X and g : Z → Y with a common domainor pushout, leading to a fibered sum in category theory
- QCD sum rules , in quantum field theory
- Riemann sum , in calculus
- Rule of sum , in combinatorics
- Subset sum problem , in cryptography
- Sum rule in differentiation , in calculus
- Sum rule in integration , in calculus
- Sum rule in quantum mechanics
- Wedge sum , a one-point union of topological spaces
- Whitney sum , of fiber bundles
- Zero-sum problem in combinatorics
** Computing and technology
- Sum (Unix) , a program for generating checksums
- StartUp-Manager , a program to configure GRUB, GRUB2, Usplash and Splashy
- Sum type , a computer science term
** Art and entertainment
- Sum, the first beat (pronounced like "some") in any rhythmic cycle of Hindustani classical music
- "Sum", a song by Pink Floyd from _The Endless River_
- _Sum: Forty Tales from the Afterlives_ , a 2009 collection of short stories by David Eagleman
- Sum 41 , a Canadian punk band
- SUM, the computer in _Goat Song (novelette)_ story by Poul Anderson in _Magazine of Fantasy and Science Fiction_ , (1972).
** Organizations
- _Senter for utvikling og miljø_ ( Centre for Development and the Environment ), a research institute which is part of the University of Oslo
- Soccer United Marketing , the for-profit marketing arm of Major League Soccer
- Society for the Establishment of Useful Manufactures , a now-defunct private state-sponsored corporation founded in 1791 to promote industrial development along the Passaic River in New Jersey in the United States
- The State University of Management , a Russian university
- Save Uganda Movement , a Ugandan militant opposition group
- Ukrainian Youth Association ( _Спілка української молоді_ , Spilka Ukraïns'koï Molodi), a youth organization in Ukraine and countries with a Ukrainian diaspora
** Places
- Sum (administrative division) , an administrative division in Mongolia, China, and some areas of Russia
- Sum (Mongolia) , an administrative division of Mongolia
- SUM, the IATA airport code for the Sumter Airport in Sumter County, South Carolina, U.S.
** Other uses
- Sum, an old name for the Finns in East Slavic languages, derived from the word Suomi, "Finland"
- Soum (currency) (also spelled "sum"), a unit of currency used in some Turkic-speaking countries of Central Asia
- SUM (interbank network) , an interbank network in 42 U.S. states
- SUM, the ISO 639-3 code for the Sumo language
- Cen (surname) 岑, a Chinese surname sometimes romanized as Sum
- Shěn (surname) 沈, a Chinese surname sometimes romanized as Sum
- _Cogito, ergo sum_ , Latin for: "I think, therefore I am"
- Sum certain , a legal term
** See also
- Addition
- Additive category
- Preadditive category
[disambig]