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Denote a restricted function?

  1. Dec 22, 2008 #1

    Hootenanny

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    How does one denote a restricted function?

    For example, suppose I have a function [itex]F : \mathbb{R}\to\mathbb{R}[/itex], how would I denote a new function f, such that f is the restriction of F to the positive semi-axis? Up until this point I would have just said that f is the restriction of F to the positive semi-axis, but it occurs to me that there should be a more concise way of writing it.
     
  2. jcsd
  3. Dec 22, 2008 #2
    Re: Restriction

    f(x)=F(x) for only x positive real number, there's not a lot about it.
     
  4. Dec 22, 2008 #3
    Re: Restriction

    [tex]f\vert_S[/tex] is the standard notation for the restriction of f to a subset S of f's domain.
     
  5. Dec 22, 2008 #4

    Hootenanny

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    Re: Restriction

    That's exactly was I was looking for Tac-Tics.

    Thanks to you both.
     
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