Foundational formalism, more intuitive than ZFC or category theory, by my sometime-officemate David McAllesterhttps://machinethoughts.wordpress.com/2015/01/27/the-foundations-of-mathematics-2/ …
@St_Rev Given f: σ→𝛕, there’s an obvious natural induced mapping f: 𝛕→N, the count of how many times an element of 𝛕 appears in range.
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@Meaningness That's actually a pretty strong rigidity property, I think. -
@Meaningness eg f: R -> [0,1) given by f(x) = x mod 1 - 13 more replies
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