Pith Number

pith:WND7KVNX

pith:2018:WND7KVNXB3BKWGAD6HFZVA4XVE

not attested not anchored not stored refs pending

Poisson structures for difference equations

Charalampos A. Evripidou, G. R. W. Quispel, John A. G. Roberts

arxiv:1806.07233 v2 · 2018-06-19 · 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{WND7KVNXB3BKWGAD6HFZVA4XVE}

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	2026-05-18T00:01:48.777472Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b347f555b70ec2ab1803f1cb9a8397a9370201e941cf2ecc43d219a0bed852b7

Aliases

arxiv: 1806.07233 · arxiv_version: 1806.07233v2 · doi: 10.48550/arxiv.1806.07233 · pith_short_12: WND7KVNXB3BK · pith_short_16: WND7KVNXB3BKWGAD · pith_short_8: WND7KVNX

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/WND7KVNXB3BKWGAD6HFZVA4XVE \
  | 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: b347f555b70ec2ab1803f1cb9a8397a9370201e941cf2ecc43d219a0bed852b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19f682befab75eb3b0da11ba53f8e0fbbe7384ace159da3a72ed9058251b1c42",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2018-06-19T13:50:05Z",
    "title_canon_sha256": "891ec6e8eecc83e2eb95744ae6668c45ecd40bb61d3fb61c8a8a860c981c35f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07233",
    "kind": "arxiv",
    "version": 2
  }
}