Pith Number

pith:36EJCOMF

pith:2014:36EJCOMFXZEBJQD4EQVQPZMWO6

not attested not anchored not stored refs pending

From Polygons to Ultradiscrete Painlev\'e Equations

Christopher Michael Ormerod, Yasuhiko Yamada

arxiv:1408.5643 v2 · 2014-08-24 · nlin.SI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{36EJCOMFXZEBJQD4EQVQPZMWO6}

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	2026-05-18T01:36:25.941990Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df88913985be4814c07c242b07e59677b8337db83baeb5c8c87f7997dc7a1ed8

Aliases

arxiv: 1408.5643 · arxiv_version: 1408.5643v2 · doi: 10.48550/arxiv.1408.5643 · pith_short_12: 36EJCOMFXZEB · pith_short_16: 36EJCOMFXZEBJQD4 · pith_short_8: 36EJCOMF

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/36EJCOMFXZEBJQD4EQVQPZMWO6 \
  | 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: df88913985be4814c07c242b07e59677b8337db83baeb5c8c87f7997dc7a1ed8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76969422ece96795c4566ab029569ab3b616272c57722a4fd47812661cb2ab62",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2014-08-24T23:56:56Z",
    "title_canon_sha256": "ab090f4db071d22acf3f5e86222cd2c566a07b9fbe0401bbfefcd08bb4235795"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.5643",
    "kind": "arxiv",
    "version": 2
  }
}