Typo in poisson_neuron.ipynb?

[XW-Muxing]

As for the Poisson approximation of the binomial, I think the rate parameter should always be 'rT'(Mrdt = T/dtrdt = rT), however, your formula gives '-rdt' as a rate parameter in the Poisson pdf, I have programmed and ran a simulation, it turns out your formula gives a '>1 probability value'.