product
The word product in mathematics generally means the result of some of multiplication operation, i.e. (http://planetmath.org/Ie) of certain of mapping ; such operations are commonly distributive over the addition operation of if it is defined.
If and are two elements of the set , giving the product , then and are in general called the factors of this product.
Some most usual products are
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the ring product (http://planetmath.org/Ring) (also in fields), especially the product of numbers and the product of square matrices;
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on vectors the scalar product, the vector product, the dyad product and the Hadamard product; on ideals the product of ideals;
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the Cartesian product, the direct products of various systems (not in with any additions).
Such kinds of product that are associative, allow to form a product of more than two factors, which is justified by the theorem in the entry general associativity. E.g. the usual product of the integers from 1 to is the factorial of .
Title | product |
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Canonical name | Product |
Date of creation | 2013-03-22 15:45:22 |
Last modified on | 2013-03-22 15:45:22 |
Owner | pahio (2872) |
Last modified by | pahio (2872) |
Numerical id | 10 |
Author | pahio (2872) |
Entry type | Definition |
Classification | msc 03E20 |
Related topic | Multiplication |
Related topic | RuleOfProduct |
Related topic | FrobeniusProduct |
Defines | factor |
Defines | factor of a product |