Source: wikibot/double-coset
= Double coset
{wiki=Double_coset}
In group theory, a double coset is a concept associated with a group acting on itself in a specific way. More formally, if \\( G \\) is a group and \\( H \\) and \\( K \\) are two subgroups of \\( G \\), the double coset of \\( H \\) and \\( K \\) with respect to an element \\( g \\in G \\) is denoted by \\( HgK \\).