Pith Number

pith:HMS7DQDE

pith:2013:HMS7DQDERZU3QFMJ3ZQBWEFIFY

not attested not anchored not stored refs pending

The Dilworth Number of Auto-Chordal-Bipartite Graphs

Andreas Brandst\"adt, Anne Berry, Konrad Engel

arxiv:1309.5787 v1 · 2013-09-23 · cs.DM · 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{HMS7DQDERZU3QFMJ3ZQBWEFIFY}

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	2026-05-18T03:12:34.164382Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b25f1c0648e69b81589de601b10a82e335d925db1e1cf2f5e1c29b40d3f2252

Aliases

arxiv: 1309.5787 · arxiv_version: 1309.5787v1 · doi: 10.48550/arxiv.1309.5787 · pith_short_12: HMS7DQDERZU3 · pith_short_16: HMS7DQDERZU3QFMJ · pith_short_8: HMS7DQDE

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/HMS7DQDERZU3QFMJ3ZQBWEFIFY \
  | 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: 3b25f1c0648e69b81589de601b10a82e335d925db1e1cf2f5e1c29b40d3f2252

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7998a191111ba56ef84a5e9bb9a50698b1241ccf8028ab00da1735e03d32747a",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2013-09-23T12:40:52Z",
    "title_canon_sha256": "a2baa01b7f6cb2494989b923d9dfc0d973e34522353c8554f8cb20aa079576b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.5787",
    "kind": "arxiv",
    "version": 1
  }
}