
1) Math subgroup 2) Mathematical grouping 3) Mathematical subgroup 4) Mathematical subsection
Found on
https://www.crosswordclues.com/clue/coset

In mathematics, if G is a group, and H is a subgroup of G, and g is an element of G, then Only when H is normal will the set of right cosets and the set of left cosets of H coincide, which is one definition of normality of a subgroup. Although derived from a subgroup, cosets are not usually themselves subgroups of G, only subsets. A coset is a lef...
Found on
http://en.wikipedia.org/wiki/Coset

A group of units of CROSS-BEDDING which shows a uniform direction of current flow.
Found on
https://www.encyclo.co.uk/local/20127

a subset of a group, formed by the consistent operation of a given element of the group on the left or right of all the elements of a subgroup of the group.
Found on
https://www.infoplease.com/dictionary/coset
No exact match found.