Pith Number

pith:QM5RUYKQ

pith:2012:QM5RUYKQZCWHFCPYVFX3EZ5CAA

not attested not anchored not stored refs pending

Tracing KAM tori in presymplectic dynamical systems

Hassan Najafi Alishah, Rafael de la Llave

arxiv:1203.0054 v2 · 2012-03-01 · 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{QM5RUYKQZCWHFCPYVFX3EZ5CAA}

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	2026-05-18T03:38:14.270269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

833b1a6150c8ac7289f8a96fb267a2001fad50b1c3d94b0f51135fb1c5006719

Aliases

arxiv: 1203.0054 · arxiv_version: 1203.0054v2 · doi: 10.48550/arxiv.1203.0054 · pith_short_12: QM5RUYKQZCWH · pith_short_16: QM5RUYKQZCWHFCPY · pith_short_8: QM5RUYKQ

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/QM5RUYKQZCWHFCPYVFX3EZ5CAA \
  | 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: 833b1a6150c8ac7289f8a96fb267a2001fad50b1c3d94b0f51135fb1c5006719

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9626992e7c166bd4e14e547008cfaac11775e3146f8192e6b06403b105f8a74b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2012-03-01T00:13:13Z",
    "title_canon_sha256": "a6f3d480271aff4d785decfc4a4ef491a8570cfa2867c242f811933cc37a166c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0054",
    "kind": "arxiv",
    "version": 2
  }
}