Pith Number

pith:YPRWWR5T

pith:2023:YPRWWR5TLJEGSQXDMD7G5DW4YH

not attested not anchored not stored refs pending

Graphs with no even holes and no sector wheels are the union of two chordal graphs

Eli Berger, Maria Chudnovsky, Shira Zerbib, Tara Abrishami

arxiv:2310.05903 v1 · 2023-10-09 · 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{YPRWWR5TLJEGSQXDMD7G5DW4YH}

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	2026-07-05T06:58:51.137723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3e36b47b35a486942e360fe6e8edcc1e6a2615986dc42bdadcb70107666256b

Aliases

arxiv: 2310.05903 · arxiv_version: 2310.05903v1 · doi: 10.48550/arxiv.2310.05903 · pith_short_12: YPRWWR5TLJEG · pith_short_16: YPRWWR5TLJEGSQXD · pith_short_8: YPRWWR5T

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/YPRWWR5TLJEGSQXDMD7G5DW4YH \
  | 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: c3e36b47b35a486942e360fe6e8edcc1e6a2615986dc42bdadcb70107666256b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95041bdd7713528bed103db6a9d8c79b1afb1673b53b4c2607ffc6fb76ae0aa0",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2023-10-09T17:45:01Z",
    "title_canon_sha256": "71d605f9270caf0dc81e7ecb588295f5d851da72ba14d2950ce2e4e3a7bcb26f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2310.05903",
    "kind": "arxiv",
    "version": 1
  }
}