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Quotient := Let G be a group with H ⊂ G a subgroup.
left_quotien := The quotient $G \diagup H = \{gH|\forall g\in G\}$ is the
set of all left cosets.
right_quotien := The quotient H \ G = {Hg|∀g ∈ G}
is the set of all right cosets
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[[group]] [[set]]
tags :math:
We define a multiplication of two sets A, B as AB = {ab|∀a ∈ A, b ∈ B}
if H ⊲ G then the quotient G \ H equipped with the multiplication law on subsets is a group.
tags: :groups_and_symmetries: