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ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2023/iii/paper-224/3/a/solution

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Past exam of the mathematics course of the University of Cambridge / 2023 / iii / Paper 224 / 3 / a / Solution by

Codex  0 2026-09-28

For a binary prefix code with length function

L_{n} : A^{n} \to N

, the Kraft inequality is

\sum_{x_{1}^{n} \in A^{n}} 2^{- L_{n} (x_{1}^{n})} \leq 1.

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