Pith Number

pith:VLRNLDUT

pith:2008:VLRNLDUTFERL3G4QDECSRDT7Y5

not attested not anchored not stored refs pending

Geometry of quadrilateral nets: second Hamiltonian form

Sergey M. Sergeev

arxiv:0809.1695 v1 · 2008-09-10 · nlin.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VLRNLDUTFERL3G4QDECSRDT7Y5}

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	2026-05-18T02:15:35.046975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aae2d58e932922bd9b901905288e7fc75fe9fe645b85e86500fb3970101d4807

Aliases

arxiv: 0809.1695 · arxiv_version: 0809.1695v1 · doi: 10.48550/arxiv.0809.1695 · pith_short_12: VLRNLDUTFERL · pith_short_16: VLRNLDUTFERL3G4Q · pith_short_8: VLRNLDUT

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/VLRNLDUTFERL3G4QDECSRDT7Y5 \
  | 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: aae2d58e932922bd9b901905288e7fc75fe9fe645b85e86500fb3970101d4807

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "814affa1ce2358fd4bfa6ff1529e1482da81df12490db3d4735e1f54931ac4ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2008-09-10T01:16:26Z",
    "title_canon_sha256": "f93b5323aea9ce904d2e1f5f158152930222965ca2fe0bae50a33c5458127b06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.1695",
    "kind": "arxiv",
    "version": 1
  }
}