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  • The '''direct product''' is a construction of structures from smaller structures. ...i\in I}</math> is a family of structures of the same species, the ''direct product of the family <math>(A_{i})_{i\in i}</math>'', denoted
    2 KB (280 words) - 11:32, 6 June 2008
  • ...coordinates''. Note the difference between this product and the [[direct product]] the two structures coincide when the family <math>(A_i)_{i\in I}</math> i When finitely many structures are involved, the terms ''direct product'' and ''direct sum'' are interchangeable, but in the case of [[group]]s, di
    2 KB (278 words) - 11:53, 6 June 2008