Pith Number

pith:NQ2P6GY5

pith:2019:NQ2P6GY5C2A4RKAA5DLUCELVWU

not attested not anchored not stored refs pending

The undirected repetition threshold

James D. Currie, Lucas Mol

arxiv:1904.10029 v2 · 2019-04-22 · math.CO · cs.DM · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NQ2P6GY5C2A4RKAA5DLUCELVWU}

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	2026-05-17T23:44:28.720043Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c34ff1b1d1681c8a800e8d7411175b53840ba2eeb1e97f87553e15a53daa6fd

Aliases

arxiv: 1904.10029 · arxiv_version: 1904.10029v2 · doi: 10.48550/arxiv.1904.10029 · pith_short_12: NQ2P6GY5C2A4 · pith_short_16: NQ2P6GY5C2A4RKAA · pith_short_8: NQ2P6GY5

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/NQ2P6GY5C2A4RKAA5DLUCELVWU \
  | 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: 6c34ff1b1d1681c8a800e8d7411175b53840ba2eeb1e97f87553e15a53daa6fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0c2555c88a710110df74c78c5110e673d28bf8270b5506a41e1ff0e996f1fd8",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-04-22T18:53:14Z",
    "title_canon_sha256": "1140c388aff3d5541e91091fa6cba386774894b08b30e671c81192d21d715a95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.10029",
    "kind": "arxiv",
    "version": 2
  }
}