Pith Number

pith:A72BHCH4

pith:2014:A72BHCH4EP7PND2SAQI5IVDZYT

not attested not anchored not stored refs pending

Flow-pattern switching in a Motored Spark Ignition Engine

David L. Reuss, Preeti S. Abraham, Saurabh Gupta, Tang-Wei Kuo, Volker Sick, Xiaofeng Yang

arxiv:1412.4287 v1 · 2014-12-13 · 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{A72BHCH4EP7PND2SAQI5IVDZYT}

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	2026-05-18T02:31:19.657406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07f41388fc23fef68f520411d45479c4ca689166f6667e85cb7c81421db1dfc6

Aliases

arxiv: 1412.4287 · arxiv_version: 1412.4287v1 · doi: 10.48550/arxiv.1412.4287 · pith_short_12: A72BHCH4EP7P · pith_short_16: A72BHCH4EP7PND2S · pith_short_8: A72BHCH4

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/A72BHCH4EP7PND2SAQI5IVDZYT \
  | 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: 07f41388fc23fef68f520411d45479c4ca689166f6667e85cb7c81421db1dfc6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc7588783d30a352e09921c7aa6ec806e3a8039cfdcaeba72011ec54ea79ae07",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2014-12-13T22:05:35Z",
    "title_canon_sha256": "80cd61cda9e25aad5c7a7e763c93da6a26ae66a144fcb9218459fb6bef993ba5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.4287",
    "kind": "arxiv",
    "version": 1
  }
}