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 G ⊕ H. 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:

    “The shortest route is not the most direct one, but rather the one where the most favorable winds swell our sails:Mthat is the lesson that seafarers teach. Not to abide by this lesson is to be obstinate: here, firmness of character is tainted with stupidity.”
    —Friedrich Nietzsche (1844–1900)

    “Labor is work that leaves no trace behind it when it is finished, or if it does, as in the case of the tilled field, this product of human activity requires still more labor, incessant, tireless labor, to maintain its identity as a “work” of man.”
    —Mary McCarthy (1912–1989)

    “Only the groups which exclude us have magic.”
    —Mason Cooley (b. 1927)