Pith Number

pith:QUMQQ3XN

pith:2025:QUMQQ3XNFM5SERTUK3JALBKHWV

not attested not anchored not stored refs pending

Vortex topology in the lee of a 6:1 prolate spheroid

Krishnan Mahesh, Marc Plasseraud

arxiv:2507.03187 v1 · 2025-07-03 · 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{QUMQQ3XNFM5SERTUK3JALBKHWV}

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	2026-07-05T11:31:54.374419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8519086eed2b3b22467456d2058547b56b12590dea872d3fac90a8426e6e2197

Aliases

arxiv: 2507.03187 · arxiv_version: 2507.03187v1 · doi: 10.48550/arxiv.2507.03187 · pith_short_12: QUMQQ3XNFM5S · pith_short_16: QUMQQ3XNFM5SERTU · pith_short_8: QUMQQ3XN

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/QUMQQ3XNFM5SERTUK3JALBKHWV \
  | 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: 8519086eed2b3b22467456d2058547b56b12590dea872d3fac90a8426e6e2197

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80e2646214807358a24f5e8f57ccdc60ee0b21bb8aafe0edd5703e393e3d4f87",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2025-07-03T21:41:03Z",
    "title_canon_sha256": "ac141858e45dccb4828b8f70dc24dc9b4e6c05bf44bddecac9fe7789c2e426bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.03187",
    "kind": "arxiv",
    "version": 1
  }
}