Pith Number

pith:XRYA4H4O

pith:2018:XRYA4H4OOYBUVOK6B32FLNQSGU

not attested not anchored not stored refs pending

On the structure of (claw,bull)-free graphs

Masood Masjoody, Sebasti\'an Gonz\'alez Hermosillo de la Maza, Yifan Jing

arxiv:1901.00043 v1 · 2018-12-31 · 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{XRYA4H4OOYBUVOK6B32FLNQSGU}

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	2026-05-17T23:57:07.023968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc700e1f8e76034ab95e0ef455b61235352defb32d12de38d303a0f03260b160

Aliases

arxiv: 1901.00043 · arxiv_version: 1901.00043v1 · doi: 10.48550/arxiv.1901.00043 · pith_short_12: XRYA4H4OOYBU · pith_short_16: XRYA4H4OOYBUVOK6 · pith_short_8: XRYA4H4O

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/XRYA4H4OOYBUVOK6B32FLNQSGU \
  | 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: bc700e1f8e76034ab95e0ef455b61235352defb32d12de38d303a0f03260b160

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a1a3bc349274e23184ddbb739a5782495e0e2e64fe72c3665aeef6be771a0f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-12-31T20:51:27Z",
    "title_canon_sha256": "85a15e3cc5484bacbc6ca0b98305ede0cb03fb86b344bef66fec6ad3752ce7ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.00043",
    "kind": "arxiv",
    "version": 1
  }
}