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by BreakfastB0b 1704 days ago
It’s probably supposed to be (P & R) <-> (Q & S)
1 comments
mathematically 1704 days ago
Yup, transposition error.
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kevinbuzzard 1704 days ago
Thanks so much! Fixed.
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kevinbuzzard 1704 days 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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mathematically 1704 days ago
It's very fun. Thanks for putting it together.
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