Pith Number

pith:D4PSC2RA

pith:2010:D4PSC2RACDX5GEGIPRWI6BNIXL

not attested not anchored not stored refs pending

Linear Size Optimal q-ary Constant-Weight Codes and Constant-Composition Codes

Alan C. H. Ling, San Ling, Son Hoang Dau, Yeow Meng Chee

arxiv:1008.1611 v1 · 2010-08-10 · cs.IT · cs.DM · math.CO · math.IT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D4PSC2RACDX5GEGIPRWI6BNIXL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:42:23.708399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f1f216a2010efd310c87c6c8f05a8baf263cf7cd686ff2e40e8b90d7f2fe081

Aliases

arxiv: 1008.1611 · arxiv_version: 1008.1611v1 · doi: 10.48550/arxiv.1008.1611 · pith_short_12: D4PSC2RACDX5 · pith_short_16: D4PSC2RACDX5GEGI · pith_short_8: D4PSC2RA

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/D4PSC2RACDX5GEGIPRWI6BNIXL \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 1f1f216a2010efd310c87c6c8f05a8baf263cf7cd686ff2e40e8b90d7f2fe081

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a58efeb42a0e1c4d80f0f3bb38d78b9141b3c4530b6c28f3bdad65464525629a",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2010-08-10T01:02:07Z",
    "title_canon_sha256": "52998ecfba82435481844b1820765dd0c8aa1a6e291cf4c2cc254ec9d1257bab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.1611",
    "kind": "arxiv",
    "version": 1
  }
}