Pith Number

pith:67NBVQEU

pith:2018:67NBVQEUHHDPEBXBGRXH67KXCZ

not attested not anchored not stored refs pending

Palindromic length of words and morphisms in class $\mathcal{P}$

Edita Pelantov\'a, Ond\v{r}ej Kadlec, Petr Ambro\v{z}, Zuzana Mas\'akov\'a

arxiv:1812.00711 v2 · 2018-12-03 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{67NBVQEUHHDPEBXBGRXH67KXCZ}

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	2026-05-17T23:59:13.563184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7da1ac09439c6f206e1346e7f7d57164098e5f87cb09551203f5f74eddc0ca1

Aliases

arxiv: 1812.00711 · arxiv_version: 1812.00711v2 · doi: 10.48550/arxiv.1812.00711 · pith_short_12: 67NBVQEUHHDP · pith_short_16: 67NBVQEUHHDPEBXB · pith_short_8: 67NBVQEU

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/67NBVQEUHHDPEBXBGRXH67KXCZ \
  | 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: f7da1ac09439c6f206e1346e7f7d57164098e5f87cb09551203f5f74eddc0ca1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff37c3629e3b57c25e18fdc44f5753cdf5906fcd6b98cda20626b130d1bdd8bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-12-03T12:36:37Z",
    "title_canon_sha256": "ad3978c1e4ebc656e334b4024474b9dc32bc4cec3db97df8902661b8dd13d9a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.00711",
    "kind": "arxiv",
    "version": 2
  }
}