Pith Number

pith:FUS5FH2L

pith:2013:FUS5FH2LHUDFYXXCUA6KXX7OIY

not attested not anchored not stored refs pending

Ship wakes: Kelvin or Mach angle?

Fr\'ed\'eric Moisy, Marc Rabaud

arxiv:1304.2653 v1 · 2013-04-09 · 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{FUS5FH2LHUDFYXXCUA6KXX7OIY}

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	2026-05-18T01:50:41.026436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d25d29f4b3d065c5ee2a03cabdfee460b14a10135bf4f6ddadad873c58b9474

Aliases

arxiv: 1304.2653 · arxiv_version: 1304.2653v1 · doi: 10.48550/arxiv.1304.2653 · pith_short_12: FUS5FH2LHUDF · pith_short_16: FUS5FH2LHUDFYXXC · pith_short_8: FUS5FH2L

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/FUS5FH2LHUDFYXXCUA6KXX7OIY \
  | 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: 2d25d29f4b3d065c5ee2a03cabdfee460b14a10135bf4f6ddadad873c58b9474

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f78bab43c6c11dc553d8b01c8b044e8935bfc0a7ba7c03875ceac12a6f8d5708",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2013-04-09T16:37:10Z",
    "title_canon_sha256": "247f73e3ad7a47eb1b6d7cd088054ddc59244fd131bbd6b8a2b52ec6f6353528"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.2653",
    "kind": "arxiv",
    "version": 1
  }
}