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  2. Quotient group - Wikipedia

    en.wikipedia.org/wiki/Quotient_group

    The quotient group is the same idea, although one ends up with a group for a final answer instead of a number because groups have more structure than an arbitrary collection of objects: in the quotient ⁠ / ⁠, the group structure is used to form a natural "regrouping".

  3. Glossary of group theory - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_group_theory

    quotient group Given a group G and a normal subgroup N of G, the quotient group is the set G / N of left cosets {aN : a ∈ G} together with the operation aN • bN = abN. The relationship between normal subgroups, homomorphisms, and factor groups is summed up in the fundamental theorem on homomorphisms.

  4. Group (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Group_(mathematics)

    The group ⁠ / ⁠, read as "⁠ ⁠ modulo ⁠ ⁠ ", [36] is called a quotient group or factor group. The quotient group can alternatively be characterized by a universal property . Cayley table of the quotient group D 4 / R {\displaystyle \mathrm {D} _{4}/R}

  5. Presentation of a group - Wikipedia

    en.wikipedia.org/wiki/Presentation_of_a_group

    Formally, the group G is said to have the above presentation if it is isomorphic to the quotient of a free group on S by the normal subgroup generated by the relations R. As a simple example, the cyclic group of order n has the presentation = , where 1 is the group identity.

  6. Quotient - Wikipedia

    en.wikipedia.org/wiki/Quotient

    A rational number can be defined as the quotient of two integers (as long as the denominator is non-zero). A more detailed definition goes as follows: [10] A real number r is rational, if and only if it can be expressed as a quotient of two integers with a nonzero denominator. A real number that is not rational is irrational.

  7. Center (group theory) - Wikipedia

    en.wikipedia.org/wiki/Center_(group_theory)

    The center of the multiplicative group of non-zero quaternions is the multiplicative group of non-zero real numbers. Using the class equation, one can prove that the center of any non-trivial finite p-group is non-trivial. If the quotient group G/Z(G) is cyclic, G is abelian (and hence G = Z(G), so G/Z(G) is trivial).

  8. Round table (discussion) - Wikipedia

    en.wikipedia.org/wiki/Round_table_(discussion)

    Round table is a form of academic discussion. Participants agree on a specific topic to discuss and debate. Participants agree on a specific topic to discuss and debate. Each person is given equal right to participate, as illustrated by the idea of a circular layout referred to in the term round table .

  9. Rank of a group - Wikipedia

    en.wikipedia.org/wiki/Rank_of_a_group

    If G is a finitely generated group and Φ(G) ≤ G is the Frattini subgroup of G (which is always normal in G so that the quotient group G/Φ(G) is defined) then rank(G) = rank(G/Φ(G)). [1] If G is the fundamental group of a closed (that is compact and without boundary) connected 3-manifold M then rank(G)≤g(M), where g(M) is the Heegaard ...