Linearly Independent Vectors: Deleting a Vector & Its Impact

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SUMMARY

In vector space V, deleting a vector from a collection of linearly independent vectors does not affect the linear independence of the remaining vectors. Specifically, if x1, x2,...,xk are linearly independent, removing any vector xk will still leave the remaining vectors x1, x2,...,x(k-1) independent. This is proven by considering that if the remaining vectors become dependent, the addition of 0 times the deleted vector does not change the linear combination's outcome.

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  • Understanding of linear independence in vector spaces
  • Familiarity with vector operations and linear combinations
  • Knowledge of scalar multiplication in linear algebra
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Dustinsfl
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Let x1, x2,...,xk be linear independent vectors in a vector space V.

If we delete a vector, say xk, from the collection, will we still have a linearly independent collection of vectors? Explain.

By deleting a vector from linearly independent span, the other vectors will remain independent; however, I don't know how to prove it.
 
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So delete one, say v_i. If the remaining vectors are linearly dependent, then there exist scalars for which the linear combination of the remaining vectors equals 0. What happens when you add 0*(v_i) to both sides?
 

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