Pith Number

pith:3S4XYUMG

pith:2002:3S4XYUMGDAOWPHQNFZV6HGAVLL

not attested not anchored not stored refs pending

Prefix Codes: Equiprobable Words, Unequal Letter Costs

Mordecai Golin, Neal E. Young

arxiv:cs/0205049 v1 · 2002-05-18 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3S4XYUMGDAOWPHQNFZV6HGAVLL}

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	2026-05-18T01:59:53.891788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dcb97c5186181d679e0d2e6be398155ad1f31a24dbaba0ed2839edd7948a39ca

Aliases

arxiv: cs/0205049 · arxiv_version: cs/0205049v1 · doi: 10.48550/arxiv.cs/0205049 · pith_short_12: 3S4XYUMGDAOW · pith_short_16: 3S4XYUMGDAOWPHQN · pith_short_8: 3S4XYUMG

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/3S4XYUMGDAOWPHQNFZV6HGAVLL \
  | 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: dcb97c5186181d679e0d2e6be398155ad1f31a24dbaba0ed2839edd7948a39ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "feae8e8268b45f5a609bcc22a1180492346a784cf77f85a2767678f8e4b192c8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.DS",
    "submitted_at": "2002-05-18T19:05:55Z",
    "title_canon_sha256": "83153c1103604cb0aa31caaf0bbbdec40f0203f0d33ae04db124b6551db56723"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0205049",
    "kind": "arxiv",
    "version": 1
  }
}