Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Sum of poisson probabilities

  1. Dec 3, 2015 #1
    Is there a closed form expression for the sum:

    Σx2/n! from 0 to N

    for N=∞ it is an exponential but what about the finite case?
     
  2. jcsd
  3. Dec 4, 2015 #2
    Hi aaaa202:

    The finite sum is a polynomial expression. According to some definitions of "close form" a polynomial is closed. I am pretty sure there is no simpler representational, as there is for the infinite sum.

    BTW: You have a typo in the equation:
    The exponent should be "n", not "2".

    Good luck.

    Regards,
    Buzz
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Sum of poisson probabilities
  1. Poisson sum formula (Replies: 1)

  2. Poisson kernel (Replies: 0)

  3. Poisson kernel (Replies: 2)

  4. Poisson integral (Replies: 5)

Loading...