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A Problem with a convolution algorithm

  1. Nov 28, 2016 #1
    Hi.

    I've been reading "Statistical Mechanics Algorithms and Computations". And I came to a problem while processing Algorithm 1.26 (I attach a link at the end). I don't get why the weights are the way they are, specially I can't understand the sequence {1/2l,1/l,...,1/l,1/2l}.

    Does anyone knows why the weights are those and how would be the sequence?

    Thanks in advance

    https://books.google.com.mx/books?id=g30SDAAAQBAJ&pg=PA47&lpg=PA47&dq=ran01-convolution&source=bl&ots=3kMGHo026k&sig=NYTpKGJiKJcHFai50vR0cLKw484&hl=en&sa=X&sqi=2&ved=0ahUKEwiF1O7IjMzQAhVJKGMKHdDvDhMQ6AEIGjAA#v=onepage&q=ran01-convolution&f=false
     
  2. jcsd
  3. Nov 28, 2016 #2

    mathman

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    Link is blocked to outsiders.
     
  4. Nov 28, 2016 #3
    Pff, can you see this pdf? http://blancopeck.net/Statistics.pdf

    The part I'm talking about is on the page 47 of the book (60 of the pdf)
     
  5. Nov 29, 2016 #4

    mathman

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    The weights are just those used by the trapezoidal method of numerical integration. It has nothing to do with the underlying problem.
     
  6. Nov 30, 2016 #5
    Well it certainly isn't a great book when it comes to explain things.

    Thank you very much
     
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