Undergrad Difference between an Algebra and a Vector space

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An algebra is defined as a vector space that includes an additional binary operation, typically multiplication. This operation allows for the combination of elements in the vector space beyond just vector addition and scalar multiplication. The distinction lies in the presence of this extra structure in algebras, which is not required for vector spaces. Understanding this difference clarifies the broader mathematical context in which these concepts are used. The discussion highlights the simplicity of the distinction while inviting various explanations.
Milsomonk
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Hi guys,
I am a little confused on the difference between an Algebra and a vector space. I´m guessing there´s a fairly simple distinction. Any guidance would be much appreciated, I accept both hand wavy and hardcore axiom based responses :)
Cheers
 
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Milsomonk said:
Hi guys,
I am a little confused on the difference between an Algebra and a vector space. I´m guessing there´s a fairly simple distinction. Any guidance would be much appreciated, I accept both hand wavy and hardcore axiom based responses :)
Cheers
An algebra is a vector space, on which additionally a second binary operation, usually referred to as multiplication is defined.
 
Amazing, thanks :)
 
I am studying the mathematical formalism behind non-commutative geometry approach to quantum gravity. I was reading about Hopf algebras and their Drinfeld twist with a specific example of the Moyal-Weyl twist defined as F=exp(-iλ/2θ^(μν)∂_μ⊗∂_ν) where λ is a constant parametar and θ antisymmetric constant tensor. {∂_μ} is the basis of the tangent vector space over the underlying spacetime Now, from my understanding the enveloping algebra which appears in the definition of the Hopf algebra...

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