Let's see what happens if we try to … [e.g., electrons] into the same state. … Since we have Fermi particles, the [probability] amplitude for the process is the difference of these two … Now if we let [the states become the same], the total amplitude … becomes zero. … It just isn't possible at all for two … two electrons in the same position with their … In fact, almost all of the peculiarities of … table is basically a consequence of this one …
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