Pith Number

pith:ALOF7OO4

pith:2017:ALOF7OO4AMGWSBYYLXYTXJGFG2

not attested not anchored not stored refs pending

Bad News for Chordal Partitions

Alex Scott, David R. Wood, Paul Seymour

arxiv:1707.04964 v2 · 2017-07-17 · 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{ALOF7OO4AMGWSBYYLXYTXJGFG2}

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	2026-05-17T23:40:49.875839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

02dc5fb9dc030d6907185df13ba4c536969fe88c03970c9a9a24e0485bc0637e

Aliases

arxiv: 1707.04964 · arxiv_version: 1707.04964v2 · doi: 10.48550/arxiv.1707.04964 · pith_short_12: ALOF7OO4AMGW · pith_short_16: ALOF7OO4AMGWSBYY · pith_short_8: ALOF7OO4

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/ALOF7OO4AMGWSBYYLXYTXJGFG2 \
  | 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: 02dc5fb9dc030d6907185df13ba4c536969fe88c03970c9a9a24e0485bc0637e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0d3f35d6d6e6cafaab3f42c898ad3b41cd1fb615c60da117e72237e357408c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-07-17T00:12:46Z",
    "title_canon_sha256": "f13a8a1fba0c7bcb10bcbb48f41b58e0743f6a8503e8434030695a2ccec9ec4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.04964",
    "kind": "arxiv",
    "version": 2
  }
}