Pith Number

pith:BMXIXBFE

pith:2002:BMXIXBFEEIMSKW2GB4MGACBKRB

not attested not anchored not stored refs pending

Variational integrators and time-dependent lagrangian systems

D. Martin de Diego, M. de Leon

arxiv:math-ph/0201039 v1 · 2002-01-18 · math-ph · 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{BMXIXBFEEIMSKW2GB4MGACBKRB}

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	2026-05-18T01:05:32.014511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b2e8b84a42219255b460f1860082a88776ef9a5a12c3f049fca36432d26e75a

Aliases

arxiv: math-ph/0201039 · arxiv_version: math-ph/0201039v1 · doi: 10.48550/arxiv.math-ph/0201039 · pith_short_12: BMXIXBFEEIMS · pith_short_16: BMXIXBFEEIMSKW2G · pith_short_8: BMXIXBFE

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/BMXIXBFEEIMSKW2GB4MGACBKRB \
  | 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: 0b2e8b84a42219255b460f1860082a88776ef9a5a12c3f049fca36432d26e75a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7a8e1aa8a651a0dd699510b0109f1680f8332e454f3adac869517a1f76317eb",
    "cross_cats_sorted": [
      "math.MP",
      "math.NA"
    ],
    "license": "",
    "primary_cat": "math-ph",
    "submitted_at": "2002-01-18T11:03:40Z",
    "title_canon_sha256": "a91a7f1a145e083a029933e160b81d27ecbb55d4b809aa7cf4454b804583edc7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math-ph/0201039",
    "kind": "arxiv",
    "version": 1
  }
}