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BQN for birdwatchers (2021)
There's now a paper (download) on this topic! Wild! Some people consider it reasonable to name combinators after types of birds. They make lists like the Ornithodex or Lähteenmäki's comprehensive Combinator birds (naturally, there's a list for these lists).
Nonetheless, I don't judge such afflicted souls (certainly not publicly), and have provided this translation table to explain BQN in terms they can understand. BQNBird 11Bird 22 ⊣ Identity I Kestrel K⊢ Identity I Kite KI∘ Bluebird B Blackbird B₁○ Bluebird B Psi ψ˙ Kestrel KKK⊸B₁CBSC Queer Q⟜ Starling S~Dove D-like: labcd.ac(bd)˜ Warbler W Cardinal CkGH Dove D Eagle EFGH Phoenix Φ Pheasant Φ₁ Lambda calculus doesn't have BQN's polymorphism on one or two arguments, so each BQN combinator corresponds to two lambda calculus forms depending on the number of arguments, giving the two columns of birds above. Bird enthusiast Conor Hoekstra now claims what he originally mistook for a " Golden Eagle" is in fact a Pheasant.
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