Pith Number

pith:2P6ZW5DY

pith:2011:2P6ZW5DYXFP2E7C7PAUESUMDHC

not attested not anchored not stored refs pending

Enumeration and Decidable Properties of Automatic Sequences

Emilie Charlier, Jeffrey Shallit, Narad Rampersad

arxiv:1102.3698 v2 · 2011-02-17 · cs.FL · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2P6ZW5DYXFP2E7C7PAUESUMDHC}

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	2026-05-18T04:11:07.358709Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3fd9b7478b95fa27c5f782849518338831c90ae5633099971e0ffee11e98910

Aliases

arxiv: 1102.3698 · arxiv_version: 1102.3698v2 · doi: 10.48550/arxiv.1102.3698 · pith_short_12: 2P6ZW5DYXFP2 · pith_short_16: 2P6ZW5DYXFP2E7C7 · pith_short_8: 2P6ZW5DY

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/2P6ZW5DYXFP2E7C7PAUESUMDHC \
  | 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: d3fd9b7478b95fa27c5f782849518338831c90ae5633099971e0ffee11e98910

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eceb004995d53d056f0456c8947a7f834485dd396f1fc5543b62a749615b01ee",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2011-02-17T21:06:08Z",
    "title_canon_sha256": "74e086f542e0c2cfcdb7c79b6174a7721b8fa1d8d4df4eb0039d2d87df5ae729"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.3698",
    "kind": "arxiv",
    "version": 2
  }
}