Pith Number

pith:Q7IADFGA

pith:2009:Q7IADFGA7FODFHCOPHAB3H4RAL

not attested not anchored not stored refs pending

Kinetic energy of vortex knots and unknots

Carlo F. Barengi, Francesca Maggioni, Renzo L. Ricca, Sultan Z. Alamri

arxiv:0904.3658 v1 · 2009-04-23 · 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{Q7IADFGA7FODFHCOPHAB3H4RAL}

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	2026-05-18T02:13:57.799442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87d00194c0f95c329c4e79c01d9f9102ce3a3616b38b7329cd862351b55354cb

Aliases

arxiv: 0904.3658 · arxiv_version: 0904.3658v1 · doi: 10.48550/arxiv.0904.3658 · pith_short_12: Q7IADFGA7FOD · pith_short_16: Q7IADFGA7FODFHCO · pith_short_8: Q7IADFGA

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/Q7IADFGA7FODFHCOPHAB3H4RAL \
  | 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: 87d00194c0f95c329c4e79c01d9f9102ce3a3616b38b7329cd862351b55354cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b03a2eb9debe84cd1c1baded04b7cbc5d361d73c0699071518b4526521f563e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2009-04-23T11:09:53Z",
    "title_canon_sha256": "56afd6eca58a30eadc5d329f31f0697d23f978e88c380f498ae8ce102dac6b10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3658",
    "kind": "arxiv",
    "version": 1
  }
}