Pith Number

pith:JMPTV6U2

pith:2017:JMPTV6U2WDDRN5LZBDMM6U6OMX

not attested not anchored not stored refs pending

Geometric algebra and an acoustic space time for propagation in non-uniform flow

Alastair Gregory, Anurag Agarwal, Joan Lasenby, Samuel Sinayoko

arxiv:1701.04715 v1 · 2017-01-16 · 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{JMPTV6U2WDDRN5LZBDMM6U6OMX}

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	2026-05-18T00:40:51.346681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b1f3afa9ab0c716f57908d8cf53ce65e3a66fb5290bd8515d31506376ea9c90

Aliases

arxiv: 1701.04715 · arxiv_version: 1701.04715v1 · doi: 10.48550/arxiv.1701.04715 · pith_short_12: JMPTV6U2WDDR · pith_short_16: JMPTV6U2WDDRN5LZ · pith_short_8: JMPTV6U2

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/JMPTV6U2WDDRN5LZBDMM6U6OMX \
  | 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: 4b1f3afa9ab0c716f57908d8cf53ce65e3a66fb5290bd8515d31506376ea9c90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b812f24b62b963ec422ff767b40e76fe866f5300b5e12f9855f8818fc4b1cbc0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2017-01-16T16:36:30Z",
    "title_canon_sha256": "2545f832737d315fea4c17f74c6289188dd2ba2683f251376e325d37c0dbe74d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.04715",
    "kind": "arxiv",
    "version": 1
  }
}