Complement

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• complement, binary representations of negative values in computer science
• ones' complement
  Signed number representations
  
  In mathematics, negative numbers in any base are represented in the usual way, by prefixing them with a "−" sign. However, on a computer, there are various ways of representing a number's sign....
  
• two's complement
  Two's complement
  
  The two's complement of a binary number is defined as the value obtained by subtracting the number from a large power of two .A two's-complement system or two's-complement arithmetic is a system in which negative numbers are represented by the two's complement of the absolute value; this system is the most common Signed number r...
  
• complement (complexity)
  Complement (complexity)
  
  In computational complexity theory, the complement of a decision problem is the decision problem resulting from reversing the yes and no answers....
  , relating to decision problems and complexity classes
• complement good
  Complement good
  
  A complementary good or complement good in economics is a Good which is consumed with another good; its cross elasticity of demand is negative....
  , a good often consumed together with another good in economics
• complement (linguistics)
  Complement (linguistics)
  
  In grammar the term complement is used with different meanings. The primary meaning is a word, phrase or clause which is necessary in a sentence to complete its meaning....
  , a word or phrase having a particular syntactic role
• complementary, a type of opposite in lexical semantics (sometimes called an antonym). See: Opposite (semantics)#Complementaries
• complement (mathematics)
  Complement (mathematics)
  
  Complement has a variety of uses in mathematics:* complement, an operation that transforms an integer into its additive inverse, useful for subtracting numbers when only addition is possible, or is easier...
   has many meanings — see this disambiguation page
• complementary angles
  Complementary angles
  
  A pair of angles are complementary if the sum of their measures is 90 degree .If the two complementary angles are adjacent their non-shared sides form a angle....
  , in geometry
• method of complements
  Method of complements
  
  In mathematics and computing, the method of complements is a technique used to subtract one number from another using only addition of positive numbers....
  , a method to compute addition and subtraction in mathematics
• complement (music)
  Complement (music)
  
  In traditional music theory a complement is the interval which, when added to the original interval, spans an octave in total. For example, a major 3rd is the complement of a minor 6th....
  , an interval that when added to another spans an octave
• complementary color
  Complementary color
  
  Complementary colors are pairs of colors that are of ?opposite? hue in some color model. The exact hue ?complementary? to a given hue depends on the model in question, and perceptual uniformity, additive color, and subtractive color models, for example, have differing complements for any given color....
  , in painting and optilsacs
• complementary experiments
  Complementary experiments
  
  In physics, two experimental techniques are often called complementary if they investigate the same subject in two different ways such that two different properties or aspects can be investigated....
  , in physics
• phonetic complement
  Phonetic complement
  
  A phonetic complement is a phonetic symbol used to disambiguate word characters that have multiple readings, in mixed logographic-phonetic scripts such as Egyptian hieroglyphs, cuneiform script, Japanese writing system, and Maya script....
  
• Ship's complement, the number of persons in a ship's full company, including both commissioned officers and crew

Biology

• complement system
  Complement system
  
  The complement system is a biochemical cascade that helps clear pathogens from an organism. It is part of the larger immune system that is not adaptable and does not change over the course of an individual's lifetime; as such it belongs to the innate immunity....
   (immunology), a cascade of proteins in the blood that form part of innate immunity
• complementary DNA
  Complementary DNA
  
  In genetics, complementary DNA is DNA synthesized from a mature mRNA template in a reaction catalyzed by the enzyme reverse transcriptase. cDNA is often used to clone eukaryote genes in prokaryotes....
  , DNA reverse transcribed from a mature mRNA template
• complementarity (molecular biology)
  Complementarity (molecular biology)
  
  In molecular biology, complementarity is a property of double-stranded nucleic acids such as DNA and RNA as well as DNA:RNA duplexes. Each strand is complementary to the other in that the base pairs between them are non-covalent bond connected via two or three hydrogen bonds....
  , a property whereby double stranded nucleic acids pair with each other
• complementation (genetics)
  Complementation (genetics)
  
  In genetics, complementation refers to a relationship between two different strain of an organism which both have homozygous recessive mutations that produce the same phenotype ....
  , a test to determine if independent recessive mutant phenotypes are caused by mutations in the same gene or in different genes

See also

• Complementarity
  Complementarity
  
  The term complementarity has many meanings:*In economics, it may refer to either**Complementary good, or**Network effects* In physics, it may refer to either...