Pith Number

pith:JEWUEO2K

pith:2012:JEWUEO2KUNPAJCOEQU4AIRRDV4

not attested not anchored not stored refs pending

Chordal Graphs are Fully Orientable

Hsin-Hao Lai, Ko-Wei Lih

arxiv:1202.5718 v1 · 2012-02-26 · math.CO · 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{JEWUEO2KUNPAJCOEQU4AIRRDV4}

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	2026-05-18T04:01:24.904335Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

492d423b4aa35e0489c48538044623af3f7455211424fb67f598f30b8a31ae18

Aliases

arxiv: 1202.5718 · arxiv_version: 1202.5718v1 · doi: 10.48550/arxiv.1202.5718 · pith_short_12: JEWUEO2KUNPA · pith_short_16: JEWUEO2KUNPAJCOE · pith_short_8: JEWUEO2K

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/JEWUEO2KUNPAJCOEQU4AIRRDV4 \
  | 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: 492d423b4aa35e0489c48538044623af3f7455211424fb67f598f30b8a31ae18

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63fd1a0c11ca84d200a585aaf82c3bc9f278b12296743e7147dc50483d6fd174",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-02-26T02:58:23Z",
    "title_canon_sha256": "a3857b91cbf1dd1a6f7a1f02e94c652ad7c1842f477e5e212d1c60563df7bbb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5718",
    "kind": "arxiv",
    "version": 1
  }
}