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Ideal of an inversable triangular matrix

  1. Jun 6, 2014 #1
    Hello
    I need your help please.
    I have a block matrix P=[a b ; 0 d], which is inversable.
    if f belongs to the ideal of the matrix, how do I prove that
    f=[itex]\sum[/itex]g[itex]_{ij}[/itex]x[itex]_{ij}[/itex]
    while g[itex]_{ij}[/itex] are regular functions above the space of inversable matrix?
    thank you!
    Karin
     
  2. jcsd
  3. Jun 6, 2014 #2

    Erland

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    Science Advisor

    I think you should explain the terminology here. What is "the ideal of the matrix", and what are "regular functions above the space of inversable matrix"?
     
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