Pith Number

pith:UTLW4M6T

pith:2003:UTLW4M6THY4UD53ROFR5U3FT2J

not attested not anchored not stored refs pending

Nonperiodic Oscillations of Pressure in a Spark Ignition Engine

G. Litak, J. Czarnigowski, K. Szabelski (Technical University of Lublin), M. Wendeker

arxiv:nlin/0302046 v1 · 2003-02-19 · nlin.CD

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UTLW4M6THY4UD53ROFR5U3FT2J}

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	2026-05-18T01:38:19.499748Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4d76e33d33e3941f7717163da6cb3d276e5e5dffdcbf226599fdaf8ab64ae41

Aliases

arxiv: nlin/0302046 · arxiv_version: nlin/0302046v1 · doi: 10.48550/arxiv.nlin/0302046 · pith_short_12: UTLW4M6THY4U · pith_short_16: UTLW4M6THY4UD53R · pith_short_8: UTLW4M6T

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/UTLW4M6THY4UD53ROFR5U3FT2J \
  | 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: a4d76e33d33e3941f7717163da6cb3d276e5e5dffdcbf226599fdaf8ab64ae41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d207ee2fce14534686877f718334cf51513df85f9ea98dc855917e824874fbfa",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "nlin.CD",
    "submitted_at": "2003-02-19T05:13:37Z",
    "title_canon_sha256": "b9af97543e0459568027e448206113d3ac5bb8acea766a744178523efa97dd19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nlin/0302046",
    "kind": "arxiv",
    "version": 1
  }
}