You can put more than one order on a set. For example, regarding salsas from the set {mild, medium, hot}:

  • mild < medium < hot, where < means the predicate “is less spicy than”
  • medium hot mild, where x≻y means the predicate “She prefers x to y”.

One could launch off into defining ≻ᵢ’s for every  of the population. (This is the kind of thing one needs to do in talking about Arrow’s Theorem.) That’s when notation begins to suck.


About isomorphismes

Argonaut: someone engaged in a dangerous but potentially rewarding adventure.
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