Direct Product of Groups

Direct Product Of Groups

In the mathematical field of group theory, the direct product is an operation that takes two groups G and H and constructs a new group, usually denoted G × H. This operation is the group-theoretic analogue of the Cartesian product of sets, and is one of several important notions of direct product in mathematics.

In the context of abelian groups, the direct product is sometimes referred to as the direct sum, and is denoted GH. Direct sums play an important role in the classification of abelian groups: according to fundamental theorem of finite abelian groups, every finite abelian group can be expressed as the direct sum of cyclic groups.

Read more about Direct Product Of Groups:  Definition, Examples, Elementary Properties, Algebraic Structure

Famous quotes containing the words direct, product and/or groups:

    James’s great gift, of course, was his ability to tell a plot in shimmering detail with such delicacy of treatment and such fine aloofness—that is, reluctance to engage in any direct grappling with what, in the play or story, had actually “taken place”Mthat his listeners often did not, in the end, know what had, to put it in another way, “gone on.”
    James Thurber (1894–1961)

    He was the product of an English public school and university. He was, moreover, a modern product of those seats of athletic exercise. He had little education and highly developed muscles—that is to say, he was no scholar, but essentially a gentleman.
    H. Seton Merriman (1862–1903)

    Writers and politicians are natural rivals. Both groups try to make the world in their own images; they fight for the same territory.
    Salman Rushdie (b. 1947)