Pith Number

pith:MVHYUTQQ

pith:1998:MVHYUTQQR7UEIPB66EMO5XA6OV

not attested not anchored not stored refs pending

A unified approach to Hamiltonian systems, Poisson systems, gradient systems, and systems with Lyapunov functions and/or first integrals

GRW Quispel, Nicolas Robidoux, Robert I McLachlan

arxiv:math-ph/9805021 v1 · 1998-05-25 · math-ph · cs.NA · math.DS · math.MP · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MVHYUTQQR7UEIPB66EMO5XA6OV}

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	2026-06-03T22:06:14.975960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

654f8a4e108fe8443c3ef118eedc1e7544f8e8bb868701ffe93d6b6cd9da8b4a

Aliases

arxiv: math-ph/9805021 · arxiv_version: math-ph/9805021v1 · doi: 10.48550/arxiv.math-ph/9805021 · pith_short_12: MVHYUTQQR7UE · pith_short_16: MVHYUTQQR7UEIPB6 · pith_short_8: MVHYUTQQ

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/MVHYUTQQR7UEIPB66EMO5XA6OV \
  | 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: 654f8a4e108fe8443c3ef118eedc1e7544f8e8bb868701ffe93d6b6cd9da8b4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c1f6c67ad9aa2bd4cc9ead38ee3002ac8c08ad06e8e209dcac9c9fb1e2eb5a9",
    "cross_cats_sorted": [
      "cs.NA",
      "math.DS",
      "math.MP",
      "math.NA"
    ],
    "license": "",
    "primary_cat": "math-ph",
    "submitted_at": "1998-05-25T00:52:49Z",
    "title_canon_sha256": "fded4ecb67683364aeb92bad46f2576cd75c1f8cee76e339c5b07c7101f031a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math-ph/9805021",
    "kind": "arxiv",
    "version": 1
  }
}