Group
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A group is a number of things or persons being in some relation to one another.
[edit] Mathematics
- Group (mathematics), a set together with a binary operation satisfying certain algebraic conditions
- Group theory, the study of groups
- Group action, a way of describing the symmetries of objects using groups
- Group isomorphism, a one-to-one correspondence (function) between two groups which respects the given group operations
- Group object, a kind of generalization of a group which is built on more complicated structures than sets
[edit] Science
Chemistry
- Functional group, a functional entity consisting of certain atoms whose presence provides a certain property to a molecule
- Group (periodic table), a column in the periodic table of chemical elements
Biology
- Cultivar group, a formal classification category in the International Code of Nomenclature for Cultivated Plants (ICNCP)
- Group selection, in evolutionary biology, the idea that alleles can become fixed or spread in a population because of the benefits they bestow upon groups of organisms
Cosmology
- Galaxy groups and clusters, a small number of galaxies near each other
- Local Group, the group containing the Milky Way Galaxy
Other
- Group delay and phase delay
- a set of lenses stacked together
- Group (stratigraphy), in geology, a lithostratigraphical unit; a group consists of formations, or rock strata.
[edit] Business
- Business group, a legal entity comprising several companies
[edit] Sociology
- Social groups, a description of various human groups
- Group action (sociology)
- Group affective tone
- Group aggression
- Group attribution error
- Group behaviour
- Group cohesiveness
- Group conflict
- Group development
- Group dynamics
- Group guilt
- Group narcissism
- Group polarization
- Group psychological abuse
- Group scapegoating
- Group-serving bias
[edit] Computing and the internet
- Group (computing), a collection of users or other objects
- Group editor, a program that allows many people to edit a shared document over a computer network
- Usenet newsgroup
[edit] Military
- Army group
- Group (air force), an air force formation
- Group Captain
[edit] Other uses
- Breed Groups (dog), the group or category to which breeds of dogs are assigned by kennel clubs
- Group (auto racing), a category of car allowed to compete in auto racing.
- Group insurance covering people with common characteristics
- A musical ensemble:
[edit] See also
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