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yet another incomplete Y derivation
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| -- http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-26.html#%_thm_4.21 | |
| (\n. ((\fact. fact fact n) (\ft k. if (= k 1) 1 (* k (ft ft (- k 1)))) )) | |
| (\n. ( (\x g. g g x) n (\ft k. if (= k 1) 1 (* k (ft ft (- k 1)))) )) | |
| (\g x. g g x) (\ft k. if (= k 1) 1 (* k (ft ft (- k 1)))) | |
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