Extension
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Look up extension, extend, or extended in Wiktionary, the free dictionary. |
Extension, extend or extended may refer to:
Computing
- Extensibility
- Filename extension, suffix to the name of a computer file, designed to show its format
- Software extension, a file containing programming that serves to extend the capabilities of or data available to a more basic program
- Extension (Mac OS), particular type of this software
- Browser extension
- Mozilla extensions for Firefox and other Mozilla projects
- Extends, a keyword used in some object-oriented programming languages to denote class inheritance
Mathematics
Algebra
- circumference
- Algebraic extension
- Artin–Schreier extension
- Cyclotomic extension, see abelian extension
- Degree of a field extension
- Dual basis in a field extension
- Extension and contraction of ideals
- Extension of modules
- Extension problem
- Field extension
- Galois extension
- Group extension, and central extension
- Integral extension
- Kernel extension theorem
- Kummer extension
- Normal extension
- Quadratic extension
- Quadratic field extension
- Ring extension
- Separable extension
- Simple extension
- Splitting of prime ideals in Galois extensions
- Trivial extension, see field extension
Analysis
Logic or set theory
- Axiom of extensionality
- Extensible cardinal
- Extension (model theory)
- Extension (predicate logic), the set of tuples of values that satisfy the predicate
- Extension (semantics), the set of things to which a property is applied
- Extension by definitions
- Extensional definition, a definition that enumerates every individual a term applies to
- Extensionality
Other uses
- Extension of a polyhedron, in geometry
- Exterior algebra, Grassmann's theory of extension, in geometry
- Homotopy extension property, in topology
- Kolmogorov extension theorem, in probability theory
- Linear extension, in order theory
- Sheaf extension, in algebraic geometry
- Tietze extension theorem, in topology
- Whitney extension theorem, in differential geometry
Music
- Extension (music), notes that fit outside the standard range
- Extended (Solar Fields album), 2005
- Extension (George Braith album), 1964
- Extension (Clare Fischer album), 1963
- Extensions (Ahmad Jamal album), 1965
- Extensions, a 1969 album by Mystic Moods Orchestra
- Extensions (McCoy Tyner album), 1970
- Extensions (Dave Holland album), 1988
- Extensions (The Manhattan Transfer album), 1979
Places
- Extension, British Columbia, a village near Regional District of Nanaimo, British Columbia, Canada
- Extension, Louisiana, unincorporated community, United States
Science
- Extension (geology), relating to the pulling apart of the Earth's crust and lithosphere
- Extension (kinesiology), movement of a joint whereby one part of the body is moved away from another
- Extension, a human anatomical term denoting movement of limb away from body
- Extension locus, the gene locus of Melanocortin 1 receptor
Other uses
- Continuing education, or extension school, a school for continuing education
- Cooperative extension service, a division of US Department of Agriculture
- Extension (metaphysics), the property of stretching out or taking up space
- Extension (telephone), telephone line attached to a main line or to a PBX or Centrex system
- Extension cord, power cable with a plug on one end and one or more sockets on the other end
- Eyelash extensions, material applied to eyelashes
- Hair extensions, strands of hair added to existing hair
- Extension, the building of community capacity by outsiders, for instance agricultural extension
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