Pith Number

pith:2OUDTYNC

pith:2018:2OUDTYNCONVYW7DLDSWMYCZLDZ

not attested not anchored not stored refs pending

Erd\H{o}s-Szekeres On-Line

Elizabeth Reiland, Florian Pfender, Kirk Boyer, Lauren M. Nelsen, Luke L. Nelsen, Ryan Solava

arxiv:1804.05952 v2 · 2018-04-16 · 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{2OUDTYNCONVYW7DLDSWMYCZLDZ}

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	2026-05-18T00:18:08.802191Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3a839e1a2736b8b7c6b1caccc0b2b1e6da5d44149edca0245a994f26fe9752f

Aliases

arxiv: 1804.05952 · arxiv_version: 1804.05952v2 · doi: 10.48550/arxiv.1804.05952 · pith_short_12: 2OUDTYNCONVY · pith_short_16: 2OUDTYNCONVYW7DL · pith_short_8: 2OUDTYNC

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/2OUDTYNCONVYW7DLDSWMYCZLDZ \
  | 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: d3a839e1a2736b8b7c6b1caccc0b2b1e6da5d44149edca0245a994f26fe9752f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75bb9514dc994f3750143dc25e9c6bd6741c2bf385f86de694e881b2cdd2a1bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-04-16T21:45:01Z",
    "title_canon_sha256": "9c975584338ec1e82d6ef4a0950fa4d324c5e105ce8a840fdfa296a8a340ad6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.05952",
    "kind": "arxiv",
    "version": 2
  }
}