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Project-declaredLean 4.28.0

W mat sq le one

W_mat_sq_le_one

Plain-language statement

Core inequality: W†W ≤ I. This is the key step, following from the isometry argument: V_rho ⊗ I_C and I_A ⊗ V_sigma are isometries, their cross product has norm ≤ 1, and the result can be related to W_mat through the MES computation (Eq. 6 in Lin-Kim-Hsieh).

quantum informationentropyquantum channels

Source project: quantumInfo

Person-level attribution pending.

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