Pith Number

pith:DACR2DWG

pith:2013:DACR2DWG5B645DDGDX3AGOD7VY

not attested not anchored not stored refs pending

Discrete gradient methods for preserving a first integral of an ordinary differential equation

G. R. W. Quispel, Richard A. Norton

arxiv:1301.4717 v1 · 2013-01-21 · math.NA · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DACR2DWG5B645DDGDX3AGOD7VY}

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	2026-05-18T03:35:55.831152Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18051d0ec6e87dce8c661df603387fae3d5e1fe49418d52ac0aa6651c6e13339

Aliases

arxiv: 1301.4717 · arxiv_version: 1301.4717v1 · doi: 10.48550/arxiv.1301.4717 · pith_short_12: DACR2DWG5B64 · pith_short_16: DACR2DWG5B645DDG · pith_short_8: DACR2DWG

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/DACR2DWG5B645DDGDX3AGOD7VY \
  | 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: 18051d0ec6e87dce8c661df603387fae3d5e1fe49418d52ac0aa6651c6e13339

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e062ec94e6bac7cff80f227400f5f386affbc31ea65b7f392459c68317f7df3f",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-01-21T01:02:50Z",
    "title_canon_sha256": "36399d488e340ae83a70885db1c3cc3666458b6b7cac06bc2dedc78cbb5c5609"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.4717",
    "kind": "arxiv",
    "version": 1
  }
}