# Super-group

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Lie super-group

A group object in the category of super-manifolds (cf. Super-manifold). A super-group is defined by a functor from the category of commutative superalgebras into the category of groups. Lie's theorems (cf. Lie theorem) are transferred to super-groups, a fact that gives the correspondence between super-groups and finite-dimensional Lie superalgebras (cf. Superalgebra).

### Examples.

1) The super-group is defined by the functor into groups of even invertible matrices from (see Super-space), i.e. of matrices in the form where are invertible matrices of orders over , while are matrices over . A homomorphism is defined by the formula (the Berezinian);

2) ;

3) and ; they leave invariant an even, or odd, non-degenerate symmetric bilinear form.

To every super-group and super-subgroup of it there is related a super-manifold , represented by a functor . This super-manifold is a homogeneous space of .

How to Cite This Entry:
Super-group. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Super-group&oldid=17496
This article was adapted from an original article by D.A. Leites (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article