Pith Number

pith:HN4HSMAV

pith:2013:HN4HSMAVF24QH2E5DMBQNWIKFN

not attested not anchored not stored refs pending

List total coloring of pseudo-outerplanar graphs

Xin Zhang

arxiv:1304.6266 v1 · 2013-04-23 · 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{HN4HSMAVF24QH2E5DMBQNWIKFN}

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	2026-05-18T03:27:21.951529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b787930152eb903e89d1b0306d90a2b4a23ae694414d02a09a314678236045a

Aliases

arxiv: 1304.6266 · arxiv_version: 1304.6266v1 · doi: 10.48550/arxiv.1304.6266 · pith_short_12: HN4HSMAVF24Q · pith_short_16: HN4HSMAVF24QH2E5 · pith_short_8: HN4HSMAV

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/HN4HSMAVF24QH2E5DMBQNWIKFN \
  | 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: 3b787930152eb903e89d1b0306d90a2b4a23ae694414d02a09a314678236045a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e70d934c1083f66d066389d3bb4da507e0df11b6e1316346604926827b57780",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-04-23T12:44:15Z",
    "title_canon_sha256": "5bc7247bea8ab7deae17ceff372cff8d3056c5d91e4d6dc8501a7dfccabf124c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.6266",
    "kind": "arxiv",
    "version": 1
  }
}