1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

I Does the length of a string depend on it's energy?

  1. Jan 5, 2017 #1
    Does the length of a string depend on its energy, or does its energy depend on its length? Similarly, does the area of a d brane depend on its energy, or does its energy depend on its energy?
    Are these stupid questions?
     
  2. jcsd
  3. Jan 6, 2017 #2

    haushofer

    User Avatar
    Science Advisor

    Well, if x(y) is a function of y, then y(x) is a function of x, whether you can explicitly write it down or not :P
     
  4. Jan 6, 2017 #3

    Urs Schreiber

    User Avatar
    Science Advisor
    Gold Member

    If the function is single valued, at least (which of course it is in the OP's question). Otherwise one gets a relation, not a function.
     
  5. Jan 6, 2017 #4

    haushofer

    User Avatar
    Science Advisor

    That's what I meant by the part you left out.
     
  6. Jan 6, 2017 #5

    Urs Schreiber

    User Avatar
    Science Advisor
    Gold Member

    Okay. To me there is a difference between a function that has no "explicit expression" (say the Gauss error function), and a relation which simply does not map arguments to values at all. But anyway, it's not worth arguing about this much further here.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Does the length of a string depend on it's energy?
  1. String Energy (Replies: 6)

  2. Energy of a string. (Replies: 8)

  3. Strings and energy (Replies: 2)

Loading...