Add recapb to iset.mm #4583
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Add recapb to iset.mm #4583
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This is recexap and its converse, which follows directly from mulap0bad Worth stating because it is a theorem in the HoTT book.
This is recapb but for reals rather than complex numbers. The only non-trivial part is that the reciprocal of a real is a real, but we already have rerecclap for that.
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OK, I couldn't resist adding the real number version too. The only non-trivial part is that the reciprocal of a real is a real, but we already have |
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This is recexap and its converse, which follows directly from mulap0bad
Worth stating because it is a theorem in the HoTT book.
Inspired by the thread at https://mathstodon.xyz/@MartinEscardo/113845859440885177