Pith Number

pith:2LQXG7KW

pith:2014:2LQXG7KWCI2PJZWWF4JMT7ZLWQ

not attested not anchored not stored refs pending

A Tutorial on Variational Integrators

Stephen D. webb

arxiv:1409.5090 v1 · 2014-09-13 · physics.plasm-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2LQXG7KWCI2PJZWWF4JMT7ZLWQ}

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	2026-05-18T02:42:37.874196Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2e1737d561234f4e6d62f12c9ff2bb4213be50120713bea8961b5160c1e2008

Aliases

arxiv: 1409.5090 · arxiv_version: 1409.5090v1 · doi: 10.48550/arxiv.1409.5090 · pith_short_12: 2LQXG7KWCI2P · pith_short_16: 2LQXG7KWCI2PJZWW · pith_short_8: 2LQXG7KW

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/2LQXG7KWCI2PJZWWF4JMT7ZLWQ \
  | 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: d2e1737d561234f4e6d62f12c9ff2bb4213be50120713bea8961b5160c1e2008

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcebec768409db1e4fecf4a7ab7da07c7253b571e4a920c447a9bfec42898407",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.plasm-ph",
    "submitted_at": "2014-09-13T16:59:24Z",
    "title_canon_sha256": "80fd33d8b04908e2268b303ad3a4a68986182dc2398970870fe73ef83ad71f9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.5090",
    "kind": "arxiv",
    "version": 1
  }
}