Pith Number

pith:NHCT3MP7

pith:2011:NHCT3MP7ETHLL5CH3B2QDF2NLC

not attested not anchored not stored refs pending

Higher-order Erdos--Szekeres theorems

Jiri Matousek, Marek Elias

arxiv:1111.3824 v3 · 2011-11-16 · cs.CG · 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{NHCT3MP7ETHLL5CH3B2QDF2NLC}

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	2026-05-18T03:59:36.481878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69c53db1ff24ceb5f447d87501974d58a33a67067372e429f05250d4e1434025

Aliases

arxiv: 1111.3824 · arxiv_version: 1111.3824v3 · doi: 10.48550/arxiv.1111.3824 · pith_short_12: NHCT3MP7ETHL · pith_short_16: NHCT3MP7ETHLL5CH · pith_short_8: NHCT3MP7

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/NHCT3MP7ETHLL5CH3B2QDF2NLC \
  | 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: 69c53db1ff24ceb5f447d87501974d58a33a67067372e429f05250d4e1434025

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0bf211c3a1b464dba97c4c2aac681dcc19fcdc8cbdc8d905081ddd8ac1981f6d",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2011-11-16T14:55:15Z",
    "title_canon_sha256": "4a7d15df701b74c970b07b9e16d28e05aab5410fde1da5437ee28a83c1171156"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3824",
    "kind": "arxiv",
    "version": 3
  }
}