Jong Yeon Lee contributed CPM-PP instances
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Contributor: Jong Yeon Lee
Received: 2026-08-05
Original bundle: pair_partition_code_JongYeonLee.zip
Original bundle SHA-256:
2a72898b34cfe47ff28876cddebdd482a811274c66b7a9e85b42ab68c4438835

The original bundle contains 19 CPM-PP instances: 18 with contributor-reported
exact minimum distance and one with a contributor-reported distance interval.
The included verify_codes.py program was rerun for this website and passed for
all 19 instances.  It checks file digests, block length, binary ranks and
dimension, CSS commutation, regular row and column weights, strict
pair-partition structure, and the two Tanner girths.  It does not reproduce
the contributor's complete minimum-distance searches.

Accordingly, the website labels minimum-distance values as contributor
reported unless it links an independent distance certificate.  For
PP37J5L20 is listed as [[740,378,d]] with 16 <= d <= 20.  The separate
PP37J5L20_weight20_audit.json file verifies nontrivial weight-20 logical
operators on both CSS sides.  The lower bound 16 remains contributor
reported.

The [[170,8,20]] instance was found using a distance-first computational
search drawing on ideas from:

J. Y. Lee, "Logical Spectroscopy: Lifted-Product Codes with Addressable
Bases," arXiv:2607.05386 (2026).

No claim of priority or inequivalence follows solely from a parameter match
or mismatch.  CODE_LIST.md records the contributor's dated comparison with
the project catalogue.