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===== Commutators & Uncertainty Relations Prerequisites =====
Before entering this lesson, students should:
  * Have exposure to and understand postulates 1-5 of quantum mechanics.
  * Have experience using bra-ket notation and its representation in matrix notation.
  * Know what the $S_{x}$, $S_{y}$, and $S_{z}$ operators are in matrix notation for a spin-$\frac{1}{2}$ system.


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