Pith Number

pith:BVJDP2OG

pith:2013:BVJDP2OGOSMWERHHUKNBFY7T4U

not attested not anchored not stored refs pending

A Variational Principle for Discrete Integrable Systems

Frank W. Nijhoff, Sarah B. Lobb

arxiv:1312.1440 v3 · 2013-12-05 · nlin.SI · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BVJDP2OGOSMWERHHUKNBFY7T4U}

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	2026-05-18T00:16:57.052194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d5237e9c674996244e7a29a12e3f3e523fe7d34a66e1b35eb16db555c7e0f0d

Aliases

arxiv: 1312.1440 · arxiv_version: 1312.1440v3 · doi: 10.48550/arxiv.1312.1440 · pith_short_12: BVJDP2OGOSMW · pith_short_16: BVJDP2OGOSMWERHH · pith_short_8: BVJDP2OG

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/BVJDP2OGOSMWERHHUKNBFY7T4U \
  | 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: 0d5237e9c674996244e7a29a12e3f3e523fe7d34a66e1b35eb16db555c7e0f0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "407d6b63e06a8da2b1a386f7a5401bbba8752a2bd5377900f798846eaa5b0930",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2013-12-05T05:43:02Z",
    "title_canon_sha256": "2ca24bba440f5c5e0a53e78b17859c47b1dfc52ee877a90beb654a312b2be93f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.1440",
    "kind": "arxiv",
    "version": 3
  }
}