Ypsilon

Aliases: —

Provenance: commit f34c141a71 · authored 2026-03-12T00:47:35+01:00 · agent claude-code · model claude-sonnet-4-6

1 source · not in taxonomy (canonical name didn't match any upstream)

Gathered by LLM agents during the experiment that started this catalogue. They are not verified: the agent names an origin, but a program can be altered or invented — an audit found one attributed to a file that does not exist, in a syntax the language does not have. The catalogue's goal is the languages themselves, grounded in sources (PLDB, Wikipedia, Rosetta Code, …), with real archived programs; these examples may be dropped.

(import (rnrs))

(define (fib n)
  (let loop ((i 0) (a 0) (b 1))
    (if (= i n)
        a
        (loop (+ i 1) b (+ a b)))))

(for-each
  (lambda (n)
    (display n)
    (display ": ")
    (display (fib n))
    (newline))
  (list 0 1 2 3 4 5 6 7 8 9 10))