• rockerface 🇺🇦
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    223 months ago

    In fact, you can build a system of definitions that very clearly doesn’t exist in real world, like hyperbolic geometry.

    • tate
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      173 months ago

      Sometimes we find that obscure pure mathematics does describe reality when no one expected it to. Riemannian geometry is one such example.

      • Natanael
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        43 months ago

        Complex numbers, and a bunch more things too