The context is Intensional Type Theory, where quotients are unavailable. I managed to construct Integers in this way: $\mathbb{Z}:=(\mathbb{N}^+\times\{{+,-\}})+\{{0\}}$, but I can't see a way to construct Rational numbers.
2026-03-28 20:57:26.1774731446
Construction of Rational Numbers without quotients
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