Klein four-group
In mathematics, the Klein four-group is an abelian group with four elements, in which each element is self-inverse (composing it with itself produces the identity)
Klein four-group - Wikipedia Jump to content From Wikipedia, the free encyclopedia Mathematical abelian group "Vierergruppe" redirects here. For the four-person anti-Nazi Resistance group, see Vierergruppe (German Resistance) . Not to be confused with Kleinian group , a discrete subgroup of the Möbius transformations. Algebraic structure → Group theory Group theory Basic notions Subgroup Normal subgroup Group action Quotient group (Semi-) direct product Direct sum Free product Wreath product Group homomorphisms kernel image simple finite infinite continuous multiplicative additive cyclic abeli
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