Pith Number

pith:JD27UCW6

pith:2010:JD27UCW6C2F45QSOTRVU7BLRIS

not attested not anchored not stored refs pending

On the Construction of Prefix-Free and Fix-Free Codes with Specified Codeword Compositions

Ali Kakhbod, Morteza Zadimoghaddam

arxiv:1002.0097 v5 · 2010-01-30 · cs.IT · 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{JD27UCW6C2F45QSOTRVU7BLRIS}

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	2026-05-18T04:02:50.654641Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

48f5fa0ade168bcec24e9c6b4f857144a0e6632e86ccbb11a5ee827010085368

Aliases

arxiv: 1002.0097 · arxiv_version: 1002.0097v5 · doi: 10.48550/arxiv.1002.0097 · pith_short_12: JD27UCW6C2F4 · pith_short_16: JD27UCW6C2F45QSO · pith_short_8: JD27UCW6

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/JD27UCW6C2F45QSOTRVU7BLRIS \
  | 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: 48f5fa0ade168bcec24e9c6b4f857144a0e6632e86ccbb11a5ee827010085368

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebd646528ac525f4465f54c3f5053e4bceaee9128b33b5c3d52d514d52620713",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2010-01-30T23:31:07Z",
    "title_canon_sha256": "110802956646136b3ce60f26fc520bbb4c0b0c6242b0cac280ccb4611b2c5780"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.0097",
    "kind": "arxiv",
    "version": 5
  }
}