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3c3f7e761e
* Move extraneous stuff out of pkg/urbit/* * s/urb/herb/g * Removed some boilerplate for `urbit` builds. * Build urbit tests and run them in the nix build.
46 lines
1.1 KiB
Plaintext
46 lines
1.1 KiB
Plaintext
A noun is an atom or a cell. An atom is a natural number. A cell is an ordered pair of nouns.
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Reduce by the first matching pattern; variables match any noun.
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nock(a) *a
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[a b c] [a [b c]]
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?[a b] 0
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?a 1
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+[a b] +[a b]
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+a 1 + a
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=[a a] 0
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=[a b] 1
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/[1 a] a
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/[2 a b] a
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/[3 a b] b
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/[(a + a) b] /[2 /[a b]]
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/[(a + a + 1) b] /[3 /[a b]]
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/a /a
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#[1 a b] a
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#[(a + a) b c] #[a [b /[(a + a + 1) c]] c]
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#[(a + a + 1) b c] #[a [/[(a + a) c] b] c]
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#a #a
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*[a [b c] d] [*[a b c] *[a d]]
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*[a 0 b] /[b a]
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*[a 1 b] b
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*[a 2 b c] *[*[a b] *[a c]]
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*[a 3 b] ?*[a b]
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*[a 4 b] +*[a b]
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*[a 5 b c] =[*[a b] *[a c]]
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*[a 6 b c d] *[a *[[c d] 0 *[[2 3] 0 *[a 4 4 b]]]]
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*[a 7 b c] *[*[a b] c]
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*[a 8 b c] *[[*[a b] a] c]
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*[a 9 b c] *[*[a c] 2 [0 1] 0 b]
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*[a 10 [b c] d] #[b *[a c] *[a d]]
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*[a 11 [b c] d] *[[*[a c] *[a d]] 0 3]
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*[a 11 b c] *[a c]
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*a *a
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