Pith Number

pith:QRHFI6L6

pith:2004:QRHFI6L6KWER75G3TXOU2KTJS7

not attested not anchored not stored refs pending

Point vortices on the sphere: stability of relative equilibria

Fr\'ed\'eric Laurent-Polz, James Montaldi, Mark Roberts

arxiv:math/0402430 v2 · 2004-02-26 · 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{QRHFI6L6KWER75G3TXOU2KTJS7}

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	2026-05-18T04:20:39.552533Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

844e54797e55891ff4db9ddd4d2a6997cda798701c4c78e28e0766f35b0f139c

Aliases

arxiv: math/0402430 · arxiv_version: math/0402430v2 · doi: 10.48550/arxiv.math/0402430 · pith_short_12: QRHFI6L6KWER · pith_short_16: QRHFI6L6KWER75G3 · pith_short_8: QRHFI6L6

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/QRHFI6L6KWER75G3TXOU2KTJS7 \
  | 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: 844e54797e55891ff4db9ddd4d2a6997cda798701c4c78e28e0766f35b0f139c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35072a61d35c67f02e0c6cea8b3a8f553434a99c255a9e4b0caa16e28336b0d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2004-02-26T11:45:52Z",
    "title_canon_sha256": "09b36ccfd44ae8abd5b1be1fc62649c6753a92c33a74a37b8686ca906487870d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0402430",
    "kind": "arxiv",
    "version": 2
  }
}