Pith Number

pith:XNBOBMBP

pith:2014:XNBOBMBPBDZVZSTP3TLGQUDWZV

not attested not anchored not stored refs pending

Universal graphs with a forbidden subgraph: Block path solidity

Gregory Cherlin, Saharon Shelah

arxiv:1404.5757 v1 · 2014-04-23 · 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{XNBOBMBPBDZVZSTP3TLGQUDWZV}

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	2026-05-18T02:53:28.017409Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb42e0b02f08f35cca6fdcd6685076cd52bbbd0bbeb857f968bb8cd1afbaf943

Aliases

arxiv: 1404.5757 · arxiv_version: 1404.5757v1 · doi: 10.48550/arxiv.1404.5757 · pith_short_12: XNBOBMBPBDZV · pith_short_16: XNBOBMBPBDZVZSTP · pith_short_8: XNBOBMBP

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/XNBOBMBPBDZVZSTP3TLGQUDWZV \
  | 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: bb42e0b02f08f35cca6fdcd6685076cd52bbbd0bbeb857f968bb8cd1afbaf943

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3abb0b79e7e4247d76b08a092fb4246e4e0ae7bc3cb8cf38c3ee15b258cd8aa2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-04-23T09:22:57Z",
    "title_canon_sha256": "cb1937eb552a6d41fcd20b45124821d61bdfbeb0e468367f2c6f26400c8ce3cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.5757",
    "kind": "arxiv",
    "version": 1
  }
}