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undefined | Better HN
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BreakfastB0b
4y ago
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It’s probably supposed to be (P & R) <-> (Q & S)
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mathematically
4y ago
Yup, transposition error.
kevinbuzzard
4y ago
Thanks so much! Fixed.
kevinbuzzard
4y ago
PS I cannot believe my undergraduate teaching material is on HN! I am a math lecturer and this is just my course notes for my UGs.
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