Results 1 to 7 of 7

Math Help - opeartor ||X||

  1. #1
    Newbie
    Joined
    Jun 2008
    Posts
    2

    opeartor ||X||

    whats the || operator used as: ||X||
    or what is this ( || ) notation called
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member
    Joined
    May 2008
    Posts
    186
    It's the symbol for a vector norm.

    Norm (mathematics) - Wikipedia, the free encyclopedia
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor Mathstud28's Avatar
    Joined
    Mar 2008
    From
    Pennsylvania
    Posts
    3,641
    Quote Originally Posted by amrita.jain View Post
    whats the || operator used as: ||X||
    or what is this ( || ) notation called
    If you are asking what |x| means, it means the absolute value of x, which is the distance from 0. |x|=\sqrt{x^2}

    and if you are asking what ||x|| means, I have only seen that as the magnitude of a vector
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Moo
    Moo is offline
    A Cute Angle Moo's Avatar
    Joined
    Mar 2008
    From
    P(I'm here)=1/3, P(I'm there)=t+1/3
    Posts
    5,618
    Thanks
    6
    Hello,

    I stopped my reading at the first line of mathstud

    tired... *scuzi*
    Last edited by Moo; June 1st 2008 at 07:41 AM.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Bar0n janvdl's Avatar
    Joined
    Apr 2007
    From
    Meh
    Posts
    1,630
    Thanks
    6
    Quote Originally Posted by amrita.jain View Post
    whats the || operator used as: ||X||
    or what is this ( || ) notation called
    Quote Originally Posted by Mathstud28 View Post
    If you are asking what |x| means, it means the absolute value of x, which is the distance from 0. |x|=\sqrt{x^2}

    and if you are asking what ||x|| means, I have only seen that as the magnitude of a vector
    Quote Originally Posted by Moo View Post
    Hello,



    The absolute value is just a particular norm, dimension 1. The question has been clearly asked, with ||X||.

    I'd suggest you to read things about that before replying this way...
    While I am not one to stand up for Mathstud, the notation the OP used in the brackets is that for absolute value. He(Mathstud) also did give the answer to both possibilities.
    Follow Math Help Forum on Facebook and Google+

  6. #6
    MHF Contributor Mathstud28's Avatar
    Joined
    Mar 2008
    From
    Pennsylvania
    Posts
    3,641
    While I am not one to stand up for Mathstud
    Follow Math Help Forum on Facebook and Google+

  7. #7
    Newbie
    Joined
    Jun 2008
    Posts
    2
    thanks all for the reply
    and spl thanks to sean.1986..i get it now
    Follow Math Help Forum on Facebook and Google+

Search Tags


/mathhelpforum @mathhelpforum