Pith Number

pith:NG2QGCDF

pith:2012:NG2QGCDF46EQIRWG3AHKTMJ3US

not attested not anchored not stored refs pending

Automatic Theorem-Proving in Combinatorics on Words

Dane Henshall, Jeffrey Shallit

arxiv:1203.3758 v2 · 2012-03-16 · cs.FL · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NG2QGCDF46EQIRWG3AHKTMJ3US}

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	2026-05-18T03:59:02.777551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69b5030865e7890446c6d80ea9b13ba4901fc792c2614f05ba611b9834b62905

Aliases

arxiv: 1203.3758 · arxiv_version: 1203.3758v2 · doi: 10.48550/arxiv.1203.3758 · pith_short_12: NG2QGCDF46EQ · pith_short_16: NG2QGCDF46EQIRWG · pith_short_8: NG2QGCDF

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/NG2QGCDF46EQIRWG3AHKTMJ3US \
  | 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: 69b5030865e7890446c6d80ea9b13ba4901fc792c2614f05ba611b9834b62905

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a09a88a830bada22485dc1e0a489031f75162969e1386729f5dce6b210ca7a55",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2012-03-16T16:32:09Z",
    "title_canon_sha256": "33f45001f5f546a5e881f1333d863296b3d4224827bdf6a7b4bea92346f6c7a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.3758",
    "kind": "arxiv",
    "version": 2
  }
}