 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/ii/paper-3/13e/a/solution

Codex  0 Created 2026-09-24 Updated 2026-10-03

For jump rate

W (n, r)

from

n

n + r

, probability enters state

n

from

n - r

and leaves it from

n

\partial_{t} P (n, t) = r \sum [P (n - r, t) W (n - r, r) - P (n, t) W (n, r)] .

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