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More generally, one can construct the free algebra R E on any set E of generators. Since rings may be regarded as Z-algebras, a free ring on E can be defined as the free algebra Z E . Over a field, the free algebra on n indeterminates can be constructed as the tensor algebra on an n-dimensional vector space.
Elementary algebra, also known as high school algebra or college algebra, [1] encompasses the basic concepts of algebra. It is often contrasted with arithmetic : arithmetic deals with specified numbers , [ 2 ] whilst algebra introduces variables (quantities without fixed values).
In mathematics, the idea of a free object is one of the basic concepts of abstract algebra.Informally, a free object over a set A can be thought of as being a "generic" algebraic structure over A: the only equations that hold between elements of the free object are those that follow from the defining axioms of the algebraic structure.
We first define a free product of two algebras. Let A and B be algebras over a commutative ring R . Consider their tensor algebra , the direct sum of all possible finite tensor products of A , B ; explicitly, T = ⨁ n = 0 ∞ T n {\displaystyle T=\bigoplus _{n=0}^{\infty }T_{n}} where
The scope of algebra thus grew to include the study of algebraic structures. This object of algebra was called modern algebra or abstract algebra, as established by the influence and works of Emmy Noether. [36] Some types of algebraic structures have useful and often fundamental properties, in many areas of mathematics.
This means that there is an injective set map i : S → F S that satisfies the following universal property: given any algebra A in V and any map k : S → A, there exists a unique V-homomorphism f : F S → A such that f ∘ i = k. This generalizes the notions of free group, free abelian group, free algebra, free module etc. It has the ...