Pith Number

pith:6SPX2QTS

pith:2015:6SPX2QTSRCZJ7ZFLNPO52ZWCHT

not attested not anchored not stored refs pending

Point Vortices: Finding Periodic Orbits and their Topological Classification

Spencer A. Smith

arxiv:1510.06756 v1 · 2015-10-22 · nlin.CD · math-ph · math.DS · math.MP · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6SPX2QTSRCZJ7ZFLNPO52ZWCHT}

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	2026-05-18T01:28:45.119400Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f49f7d427288b29fe4ab6bdddd66c23ce86457cac4b0cf27bcbca61422bf3dbe

Aliases

arxiv: 1510.06756 · arxiv_version: 1510.06756v1 · doi: 10.48550/arxiv.1510.06756 · pith_short_12: 6SPX2QTSRCZJ · pith_short_16: 6SPX2QTSRCZJ7ZFL · pith_short_8: 6SPX2QTS

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/6SPX2QTSRCZJ7ZFLNPO52ZWCHT \
  | 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: f49f7d427288b29fe4ab6bdddd66c23ce86457cac4b0cf27bcbca61422bf3dbe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c61dc8aaeda1461edd7494ed3dba8c7bbb3c95805ac7289aaefbd58b7f40b16",
    "cross_cats_sorted": [
      "math-ph",
      "math.DS",
      "math.MP",
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.CD",
    "submitted_at": "2015-10-22T20:17:03Z",
    "title_canon_sha256": "8fbc0c35a9fcc8cdff07779aa8df5f2cd4e6e5015dadf7c19d443dfb2f75a068"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.06756",
    "kind": "arxiv",
    "version": 1
  }
}