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how do i get the probability of the douple-spending?

  • i don't know where does the "exp" come from?
    – user3629
    Commented Nov 5, 2019 at 11:18
  • Why is the probability of success equal 1-exp(...)?
    – user3629
    Commented Nov 5, 2019 at 11:25
  • that is the Cumulative distribution function of an exponential distribution
    – mihi
    Commented Nov 5, 2019 at 21:05
  • exp(x) is another form of writing e^x
    – mihi
    Commented Nov 5, 2019 at 21:06
  • @mihi Thank you very much for your help, this has helped me a lot.But I have a new problem, t0 is the time interval, not the probability distribution function λ
    – user3629
    Commented Nov 7, 2019 at 3:21


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