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Definitions Define $W(2|1)$ as the transition probability per unit time from $1$ to $2$. This gets us the Master equation $$\partial_t p(a, m) = \int\!\!\!\!\int\! \left(W(a,m|a',m')p(a',m') - W(a',m'|a,m)p(a,m)\right)\mathrm{d}a'\mathrm{d}m'$$ Define further, for fun, \$\mathbb{W}(a,m|a',m') = W(a,m|a',m') - \delta(a-a')\delta(m-m')\int\!\!\int ...

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