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Math Help - Quick question about matrix symbol used

  1. #1
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    Quick question about matrix symbol used

    What does the following mean ?

    A1 ↔ A2

    where a1 and a2 are 2 different matricies?

    i know is used to indicate that the matrix preceding the arrow will be changed using the operation specified but i dont remember what that symbol means
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  2. #2
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    Quote Originally Posted by aznprdgy View Post
    What does the following mean ?

    A1 ↔ A2

    where a1 and a2 are 2 different matricies?

    i know is used to indicate that the matrix preceding the arrow will be changed using the operation specified but i dont remember what that symbol means
    I would need to see the context to be sure of what that notation means. Sometimes, it is used to indicate that the matrices commute, in other words A_2A_1=A_1A_2.
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  3. #3
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    if p != i then perform A1 <=> A2
    where p is the lowest interger and i is indicates the matrix row


    its a step used in gaussian elimination process
    Last edited by aznprdgy; February 22nd 2010 at 08:00 AM.
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