Pith Number

pith:E7ZLVQJO

pith:2012:E7ZLVQJO7M77MBIQQICPULYOOP

not attested not anchored not stored refs pending

Geometry of integrable dynamical systems on 2-dimensional surfaces

Nguyen Tien Zung, Nguyen Van Minh

arxiv:1204.1639 v1 · 2012-04-07 · 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{E7ZLVQJO7M77MBIQQICPULYOOP}

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	2026-05-18T03:58:23.638067Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27f2bac12efb3ff605108204fa2f0e73ffc8cce48b98250c3dc4e6b2d41c2216

Aliases

arxiv: 1204.1639 · arxiv_version: 1204.1639v1 · doi: 10.48550/arxiv.1204.1639 · pith_short_12: E7ZLVQJO7M77 · pith_short_16: E7ZLVQJO7M77MBIQ · pith_short_8: E7ZLVQJO

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/E7ZLVQJO7M77MBIQQICPULYOOP \
  | 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: 27f2bac12efb3ff605108204fa2f0e73ffc8cce48b98250c3dc4e6b2d41c2216

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "289055f335c2c8bbf6e562361e4f92789acc8ccb1e3c16c60ad7ad381c529e66",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2012-04-07T14:06:54Z",
    "title_canon_sha256": "5c73888ea68be9774cc9ff940d28b4d792e6ee85f103426686378bc2be2617b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1639",
    "kind": "arxiv",
    "version": 1
  }
}