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Subgroup

   Also found in: Dictionary/thesaurus, Legal, Wikipedia 0.01 sec.
subgroup [′səb‚grüp]
(mathematics)
A subsetNof a groupGwhich is itself a group relative to the same operation.
Subgroup 

in mathematics, a subset of elements of a group that itself forms a group with respect to the group operation. This means that a subgroup that contains the elements a and b will always contain a-1 and ab as well.
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somewhat like that of a starling, and that of the fourth subgroup, Camarhynchus, is slightly parrot-shaped.
The Voyage of the Beagle by Darwin, Charles View in context
The existence of groups would have been of simple signification, if one group had been exclusively fitted to inhabit the land, and another the water; one to feed on flesh, another on vegetable matter, and so on; but the case is widely different in nature; for it is notorious how commonly members of even the same subgroup have different habits.
The Origin of Species by Darwin, Charles View in context
 
 
 
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