Pith Number

pith:WPCOISSW

pith:2019:WPCOISSW2RXCRCH3WV73ATYZVO

not attested not anchored not stored refs pending

Constructing discrete Painlev\'e equations: from E$_8^{(1)}$ to A$_1^{(1)}$ and back

Alfred Ramani, Basil Grammaticos, Ralph Willox, Tamizharasi Tamizhmani

arxiv:1902.09920 v1 · 2019-02-26 · math-ph · math.MP · 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{WPCOISSW2RXCRCH3WV73ATYZVO}

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	2026-05-17T23:52:35.037445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3c4e44a56d46e2888fbb57fb04f19ab9c911a70cf9dc76e3efc4ac8e8b23fb4

Aliases

arxiv: 1902.09920 · arxiv_version: 1902.09920v1 · doi: 10.48550/arxiv.1902.09920 · pith_short_12: WPCOISSW2RXC · pith_short_16: WPCOISSW2RXCRCH3 · pith_short_8: WPCOISSW

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/WPCOISSW2RXCRCH3WV73ATYZVO \
  | 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: b3c4e44a56d46e2888fbb57fb04f19ab9c911a70cf9dc76e3efc4ac8e8b23fb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bfbb6f2896aebbf93a38868d891296945d15d6265466814065798a976ddf5ef",
    "cross_cats_sorted": [
      "math.MP",
      "nlin.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2019-02-26T13:27:48Z",
    "title_canon_sha256": "99394cda8e43b9eaac7e0092c73a121968a4f3e2a16c32fde298be4f8066112c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.09920",
    "kind": "arxiv",
    "version": 1
  }
}