Pith Number

pith:QXEEMKIA

pith:2017:QXEEMKIATPYGRXAZOOYVY2VOST

not attested not anchored not stored refs pending

Coaxial collisions of a vortex ring and a sphere in an inviscid incompressible fluid

B. U. Felderhof

arxiv:1702.03876 v2 · 2017-02-13 · 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{QXEEMKIATPYGRXAZOOYVY2VOST}

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	2026-05-18T00:45:42.181295Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85c84629009bf068dc1973b15c6aae94df26976c70722151bde00e17af068161

Aliases

arxiv: 1702.03876 · arxiv_version: 1702.03876v2 · doi: 10.48550/arxiv.1702.03876 · pith_short_12: QXEEMKIATPYG · pith_short_16: QXEEMKIATPYGRXAZ · pith_short_8: QXEEMKIA

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/QXEEMKIATPYGRXAZOOYVY2VOST \
  | 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: 85c84629009bf068dc1973b15c6aae94df26976c70722151bde00e17af068161

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bac37806ea9b5e2f435a498e097fda6c9a48d6efedfba35d1cb2a198ed17b419",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2017-02-13T17:05:38Z",
    "title_canon_sha256": "f9c34b52e1ed4281311638a854e46d5690f3e19f4c5ac59043b349e7a83337e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.03876",
    "kind": "arxiv",
    "version": 2
  }
}