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- In [[algebra]], an '''identity element''' or '''neutral element''' with respect to a [[binary operation]] is an el holds for all ''x'' in ''X''. An identity element, if it exists, is unique.927 bytes (140 words) - 15:33, 8 December 2008
- 162 bytes (23 words) - 02:15, 6 December 2008
- 850 bytes (136 words) - 15:37, 8 December 2008
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- * [[Identity element]], or neutral element, with respect to a binary operation, an element which591 bytes (78 words) - 12:52, 31 May 2009
- In [[algebra]], an '''identity element''' or '''neutral element''' with respect to a [[binary operation]] is an el holds for all ''x'' in ''X''. An identity element, if it exists, is unique.927 bytes (140 words) - 15:33, 8 December 2008
- Set with a binary associative operation such that the operation admits an identity element and each element of the set has an inverse element for the operation.197 bytes (30 words) - 08:22, 4 September 2009
- ...]] (if one exists) such that raising the element to that power gives the [[identity element]] of the group. If there is no such number, the element is said to be of '857 bytes (146 words) - 13:24, 1 February 2009
- #REDIRECT [[Identity element]]30 bytes (3 words) - 16:01, 6 November 2008
- #REDIRECT [[Identity element]]30 bytes (3 words) - 14:42, 7 November 2008
- #REDIRECT [[Identity element]]30 bytes (3 words) - 14:43, 7 November 2008
- ...n [[inverse function]]). It is a [[permutation]] of the set, and is the [[identity element]] of the [[symmetric group]] on ''X''.425 bytes (64 words) - 15:38, 7 February 2009
- * The zero (additive identity element) of a [[ring (mathematics)|ring]] is an absorbing element for the ring mult726 bytes (112 words) - 15:21, 21 December 2008
- ...r, off-diagonal, entries equal to zero. The identity matrix acts as the [[identity element]] for [[matrix multiplication]]. Its entries are those of the [[Kronecker1,020 bytes (136 words) - 10:39, 23 April 2009
- * There is an [[identity element]] <math>I \in M</math> such that ...have at most one inverse (note that <math>x = y^{-1}</math> as well). The identity element is self-inverse and the product of invertible elements is invertible,3 KB (526 words) - 11:02, 23 December 2008
- An algebraic structure with an associative binary operation and an identity element.120 bytes (15 words) - 02:21, 9 November 2008
- {{r|Identity element}}514 bytes (67 words) - 21:47, 11 January 2010
- A square matrix with ones on the main diagonal and zeroes elsewhere: the identity element for matrix multiplication.152 bytes (21 words) - 13:19, 5 December 2008
- Examples include an [[identity element]] or an [[absorbing element]]. An important class of examples is formed by1,007 bytes (146 words) - 16:14, 13 December 2008
- {{r|Identity element}}965 bytes (124 words) - 17:23, 11 January 2010
- ...a homomorphism''' is the set of all elements of the domain that map to the identity element of the codomain. This subset is a [[normal subgroup]], and every normal su ...ve]] homomorphism (or, equivalently, one whose kernel consists only of the identity element).1 KB (210 words) - 01:00, 11 February 2009
- {{r|Identity element}}969 bytes (124 words) - 18:42, 11 January 2010
- ...cs)|group]] or [[vector space]] have a distinguished element, such as an [[identity element]], and [[morphism]]s of the structures respect those elements.1 KB (168 words) - 12:06, 22 November 2008
- * [[Kernel of a homomorphism]], the elements mapped to the [[identity element]] by a [[homomorphism]]387 bytes (58 words) - 09:26, 30 September 2009