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What are the rules for initial value problems?

  1. Sep 28, 2011 #1
    Why is it that you are able to have 1 initial value problem with 2 solutions, but not 2 initial value problems with 1 solution for an ODE?

    Is there a theorem that states this?
  2. jcsd
  3. Sep 29, 2011 #2


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    Science Advisor

    I have no idea what you are asking. What do you mean by "1 initial value problem with two solutions"? I was under the impression that an initial value problem either had a unique solution or had an infinite number of solutions. (That's basically a statement of the "Fredholm alternative"). On the other hand, as to "not 2 initial value problems with 1 solution for an ODE?", it's easy to make up two distinct intial value problems having the same solution. Is that not what you meant?
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