basis for subspace of dim $n-1$ in $mathbbR^n$ [closed]

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Assume we have subspace $T = w in mathbbR^n $ with $v$ a direction in $mathbbR^n$.
What is the most efficient way to construct a basis for $T$?
As $n$ is in general large, I want to avoid using gram-schmidt, since that is too costly.



kind regards,
Koen







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closed as unclear what you're asking by Batominovski, John Ma, Mostafa Ayaz, José Carlos Santos, ΘΣΦGenSan Jul 31 at 22:47


Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.










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    Your definition of $T$ does not describe a vector space. Do you mean $[v]^perp subset mathbbR^n$?
    – Babelfish
    Jul 31 at 9:31














up vote
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down vote

favorite
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Assume we have subspace $T = w in mathbbR^n $ with $v$ a direction in $mathbbR^n$.
What is the most efficient way to construct a basis for $T$?
As $n$ is in general large, I want to avoid using gram-schmidt, since that is too costly.



kind regards,
Koen







share|cite|improve this question













closed as unclear what you're asking by Batominovski, John Ma, Mostafa Ayaz, José Carlos Santos, ΘΣΦGenSan Jul 31 at 22:47


Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.










  • 2




    Your definition of $T$ does not describe a vector space. Do you mean $[v]^perp subset mathbbR^n$?
    – Babelfish
    Jul 31 at 9:31












up vote
-1
down vote

favorite
1









up vote
-1
down vote

favorite
1






1





Assume we have subspace $T = w in mathbbR^n $ with $v$ a direction in $mathbbR^n$.
What is the most efficient way to construct a basis for $T$?
As $n$ is in general large, I want to avoid using gram-schmidt, since that is too costly.



kind regards,
Koen







share|cite|improve this question













Assume we have subspace $T = w in mathbbR^n $ with $v$ a direction in $mathbbR^n$.
What is the most efficient way to construct a basis for $T$?
As $n$ is in general large, I want to avoid using gram-schmidt, since that is too costly.



kind regards,
Koen









share|cite|improve this question












share|cite|improve this question




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edited Aug 1 at 6:56
























asked Jul 31 at 9:25









Koen

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closed as unclear what you're asking by Batominovski, John Ma, Mostafa Ayaz, José Carlos Santos, ΘΣΦGenSan Jul 31 at 22:47


Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.






closed as unclear what you're asking by Batominovski, John Ma, Mostafa Ayaz, José Carlos Santos, ΘΣΦGenSan Jul 31 at 22:47


Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.









  • 2




    Your definition of $T$ does not describe a vector space. Do you mean $[v]^perp subset mathbbR^n$?
    – Babelfish
    Jul 31 at 9:31












  • 2




    Your definition of $T$ does not describe a vector space. Do you mean $[v]^perp subset mathbbR^n$?
    – Babelfish
    Jul 31 at 9:31







2




2




Your definition of $T$ does not describe a vector space. Do you mean $[v]^perp subset mathbbR^n$?
– Babelfish
Jul 31 at 9:31




Your definition of $T$ does not describe a vector space. Do you mean $[v]^perp subset mathbbR^n$?
– Babelfish
Jul 31 at 9:31










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$T$ is not a subspace. If you mean $span(v)^perp$ you can complete $v$ to an orthogonal basis $v, w_1, ..., w_n-1$ of $mathbbR^n$ using e.g. the Grahm-Schmidt process and remove $v$ afterwards.






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    1 Answer
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    active

    oldest

    votes








    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes








    up vote
    0
    down vote













    $T$ is not a subspace. If you mean $span(v)^perp$ you can complete $v$ to an orthogonal basis $v, w_1, ..., w_n-1$ of $mathbbR^n$ using e.g. the Grahm-Schmidt process and remove $v$ afterwards.






    share|cite|improve this answer

























      up vote
      0
      down vote













      $T$ is not a subspace. If you mean $span(v)^perp$ you can complete $v$ to an orthogonal basis $v, w_1, ..., w_n-1$ of $mathbbR^n$ using e.g. the Grahm-Schmidt process and remove $v$ afterwards.






      share|cite|improve this answer























        up vote
        0
        down vote










        up vote
        0
        down vote









        $T$ is not a subspace. If you mean $span(v)^perp$ you can complete $v$ to an orthogonal basis $v, w_1, ..., w_n-1$ of $mathbbR^n$ using e.g. the Grahm-Schmidt process and remove $v$ afterwards.






        share|cite|improve this answer













        $T$ is not a subspace. If you mean $span(v)^perp$ you can complete $v$ to an orthogonal basis $v, w_1, ..., w_n-1$ of $mathbbR^n$ using e.g. the Grahm-Schmidt process and remove $v$ afterwards.







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        answered Jul 31 at 15:57









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