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structure definition def or abbrev

BipartiteSystem

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formal statement (Lean)

  94structure BipartiteSystem where
  95  /-- Hilbert space dimension of subsystem A. -/
  96  dim_A : ℕ
  97  /-- Hilbert space dimension of subsystem B. -/
  98  dim_B : ℕ
  99  /-- Both are non-trivial. -/
 100  dim_A_pos : dim_A > 1
 101  dim_B_pos : dim_B > 1
 102
 103/-- The entanglement entropy of subsystem A.
 104    S_A = -Tr(ρ_A log ρ_A) -/

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