Results 1 to 2 of 2

Math Help - What does this notation mean

  1. #1
    Junior Member
    Joined
    May 2010
    Posts
    63

    What does this notation mean

    Hi,

    I'm given a function f and the unit disk (although it could be any region)

    and f \in D(0;1)

    Does the above mean the domain of the function is the unit disk or the codomain?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member
    Joined
    Mar 2013
    From
    BC, Canada
    Posts
    95
    Thanks
    15

    Re: What does this notation mean

    Quote Originally Posted by director View Post
    Hi,

    I'm given a function f and the unit disk (although it could be any region)

    and f \in D(0;1)

    Does the above mean the domain of the function is the unit disk or the codomain?
    f(X) is the codomain if X is the domain. Then f(X) \subset D(0;1) would be the correct notation. Using the \in symbol implies that f is a member of a collection of functions not points. In short, I wouldn't call f \in D(0;1) a valid statement (unless in this case, D is a collection of functions, which I've never seen written this way).
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: March 10th 2011, 02:23 AM
  2. notation
    Posted in the Advanced Algebra Forum
    Replies: 0
    Last Post: November 12th 2010, 05:15 AM
  3. Big Oh notation
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: May 16th 2010, 03:27 AM
  4. little-o notation
    Posted in the Calculus Forum
    Replies: 0
    Last Post: November 13th 2009, 06:39 AM
  5. Replies: 1
    Last Post: August 26th 2009, 12:40 PM

Search Tags


/mathhelpforum @mathhelpforum