Vector Space? Determine Axiom Satisfaction

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In summary, the conversation discusses determining whether a given set is a vector space and considering the axiom of closeness under linear combination. The specific set being discussed is the set of vectors <a1, a2> where a2 =3a1+1. The conversation also touches on the confusion about applying a rule such as "x+y=y+x" to this set.
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maiad
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Homework Statement


Determine whether set is a vector space. If not, give at least one axiom that is not satisfied.
the set of vectors <a1, a2> where a2 =3a1+1

The Attempt at a Solution



I'm not sure if this is a vector free space or not,, what I'm confused is about is how the a rule such as "x+y=y+x" can be applied. Would it just be a1 +a2 = a1 +(3a1 +1)=a2+a1=(3a1+1)+a1
 
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  • #2
You want to consider the closeness of this set under arbitrary linear combination, including zero vector, etc.
 
  • #3
you mean axioms for a free space?
 
  • #4
maiad said:
you mean axioms for a free space?

I meant axiom for a vector space (closeness under linear combination), if that's not what you meant, ignore what I said.
 

What is a vector space?

A vector space is a mathematical structure consisting of a set of elements (vectors) that can be added together and multiplied by scalars, such as numbers. It is often used to represent quantities that have both magnitude and direction, such as force or velocity.

What are the axioms of a vector space?

The axioms of a vector space are a set of rules that must be satisfied for a set of elements to be considered a vector space. These axioms include closure under addition and scalar multiplication, associativity, commutativity, existence of an additive identity element, existence of additive inverses, and distributivity.

What does it mean for a set to satisfy the axioms of a vector space?

If a set of elements satisfies the axioms of a vector space, it means that the set is a vector space. This means that the elements in the set can be added together and multiplied by scalars in a way that is consistent with the properties outlined in the axioms. This allows us to perform mathematical operations and make logical deductions about the elements in the set.

How do you determine if a set satisfies the axioms of a vector space?

To determine if a set satisfies the axioms of a vector space, we must check if the set satisfies each individual axiom. This involves performing mathematical operations on the elements in the set and checking if the results are consistent with the properties outlined in the axioms. If all of the axioms are satisfied, then the set is a vector space.

Why is it important to determine if a set satisfies the axioms of a vector space?

Determining if a set satisfies the axioms of a vector space is important because it allows us to use the set as a mathematical tool. Vector spaces are widely used in various fields of science, such as physics, computer science, and engineering, to model and analyze real-world phenomena. By ensuring that a set satisfies the axioms, we can confidently use the set to make predictions and draw conclusions about the system being studied.

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