2 Commits

Author	SHA1	Message	Date
giles	d992788a03	mk: even-i / odd-i — host-arithmetic parity goals ... Two-line definitions over project + host even?/odd?. Ground-only — no relational behaviour, but they pair cleanly with membero for filtered enumeration: (fresh (x) (membero x (list 1 2 3 4 5 6)) (even-i x) (== q x)) -> (2 4 6) 5 new tests, 416/416 cumulative.	2026-05-08 11:49:47 +00:00
giles	9795532f7d	mk: intarith.sx — ground-only integer arithmetic via project ... pluso-i / minuso-i / *o-i / lto-i / lteo-i / neqo-i wrap host arithmetic in project. They run at native speed but require their inputs to walk to ground numbers — they are NOT relational the way Peano pluso is. Use them when puzzle size makes Peano impractical (which is most cases beyond toy examples). Composes with relational goals — for instance, (fresh (x) (membero x (1 2 3 4 5)) (lto-i x 3) (== q x)) filters the domain by < 3 and returns (1 2). 18 new tests, 287/287 cumulative.	2026-05-08 11:02:09 +00:00