Pith Number

pith:UANRAB2Y

pith:2019:UANRAB2YH3RAHVWSZK675R2ZKB

not attested not anchored not stored refs pending

Planar digraphs for automatic complexity

Achilles A. Beros, Bj{\o}rn Kjos-Hanssen, Daylan Kaui Yogi

arxiv:1902.00812 v1 · 2019-02-02 · cs.FL · math.CO · math.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{UANRAB2YH3RAHVWSZK675R2ZKB}

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	2026-05-17T23:54:52.072588Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a01b1007583ee203d6d2cabdfec759504307439db7d808de14e4cb6ec2162de0

Aliases

arxiv: 1902.00812 · arxiv_version: 1902.00812v1 · doi: 10.48550/arxiv.1902.00812 · pith_short_12: UANRAB2YH3RA · pith_short_16: UANRAB2YH3RAHVWS · pith_short_8: UANRAB2Y

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/UANRAB2YH3RAHVWSZK675R2ZKB \
  | 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: a01b1007583ee203d6d2cabdfec759504307439db7d808de14e4cb6ec2162de0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "412a44ce07b9581635140caa26407960c6bc8b4eb5b36ca99062e5530f956ec5",
    "cross_cats_sorted": [
      "math.CO",
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2019-02-02T23:25:32Z",
    "title_canon_sha256": "eeca7014b609fea14362d9221d9760869286b4120de10be9fee992527f138df0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.00812",
    "kind": "arxiv",
    "version": 1
  }
}