Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Algebra_over_a_field> ?p ?o }
- Algebra_over_a_field abstract "In mathematics, an algebra is one of the fundamental algebraic structures used in abstract algebra. An algebra over a field is a vector space (a module over a field) equipped with a bilinear product. Thus, an algebra over a field is a set, together with operations of multiplication, addition, and scalar multiplication by elements of the underlying field, that satisfy the axioms implied by \"vector space\" and \"bilinear\".The multiplication operation in an algebra may or may not be associative, leading to the notions of associative algebras and nonassociative algebras. Given an integer n, the ring of real square matrices of order n is an example of an associative algebra over the field of real numbers under matrix addition and matrix multiplication. Euclidean space with multiplication given by the vector cross product is an example of a nonassociative algebra over the field of real numbers.An algebra is unital or unitary if it has an identity element with respect to the multiplication. The ring of real square matrices of order n forms a unital algebra since the identity matrix of order n is the identity element with respect to matrix multiplication. It is an example of a unital associative algebra, a (unital) ring that is also a vector space.Many authors use the term algebra to mean associative algebra, or unital associative algebra, or in some subjects such as algebraic geometry, unital associative commutative algebra.Replacing the field of scalars by a commutative ring leads to the more general notion of an algebra over a ring. Algebras are not to be confused with vector spaces equipped with a bilinear form, like inner product spaces.".
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- Algebra_over_a_field wikiPageWikiLink Banach_algebra.
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- Algebra_over_a_field wikiPageWikiLink Basis_(linear_algebra).
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- Algebra_over_a_field wikiPageWikiLink Ideal_(ring_theory).
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- Algebra_over_a_field wikiPageWikiLink Max-plus_algebra.
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- Algebra_over_a_field wikiPageWikiLink Scalar_(mathematics).