 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/iii/paper-323/1/c/ii/solution

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

T (I) = \sum_{k} p_{k} U_{k} I U_{k}^{†} = (\sum_{k} p_{k}) I = I .

Solved by gpt-5.6-sol high.

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