Pith Number

pith:QVUSXCY4

pith:2015:QVUSXCY4QJZEXOX6NEB5KUNZQH

not attested not anchored not stored refs pending

On a conjecture of Erd\H{o}s and Szekeres

Georgios Vlachos

arxiv:1505.07549 v1 · 2015-05-28 · 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{QVUSXCY4QJZEXOX6NEB5KUNZQH}

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.

Cited by

1 paper in Pith

Combinatorial Geometry of Erd\H{o}s--Szekeres Type Problems: SAT/ASP Modeling and Linear Subreduction

Receipt and verification

First computed	2026-05-18T02:00:58.064969Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85692b8b1c82724bbafe6903d551b981f9b8036c4308aab9004780e128d9e9ee

Aliases

arxiv: 1505.07549 · arxiv_version: 1505.07549v1 · doi: 10.48550/arxiv.1505.07549 · pith_short_12: QVUSXCY4QJZE · pith_short_16: QVUSXCY4QJZEXOX6 · pith_short_8: QVUSXCY4

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/QVUSXCY4QJZEXOX6NEB5KUNZQH \
  | 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: 85692b8b1c82724bbafe6903d551b981f9b8036c4308aab9004780e128d9e9ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f3bcb26652dff5027e225e733da9093eb5ed9501ba5d0950746f330b9ad5297",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-05-28T04:59:37Z",
    "title_canon_sha256": "cf8d6ac9b0676602ac8367fcf6c3ce573cb704ac14036aeccea2df14327e900e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.07549",
    "kind": "arxiv",
    "version": 1
  }
}