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Woit · 2025-10-20
已登记出处中的最早位置:§7.5 · en。
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§7.5 · en · machine_draft · machine-draft-not-reviewed
Then the North pole of the sphere is a “spin-up” state, and the South pole is a “spin-down” state. Along the equator, two points correspond to states with definite values of , and two others correspond to states with definite values of .