Pith Number

pith:WLVU7PNK

pith:2014:WLVU7PNKSW4UROS4NS4YIF7HXZ

not attested not anchored not stored refs pending

Efficiency at maximum power output for an engine with a passive piston

Hisao Hayakawa, Tomohiko G. Sano

arxiv:1412.4468 v3 · 2014-12-15 · cond-mat.stat-mech · cond-mat.soft

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WLVU7PNKSW4UROS4NS4YIF7HXZ}

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	2026-05-18T01:03:32.942999Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2eb4fbdaa95b948ba5c6cb98417e7be69233ac0df57e02fa4141f3fc4345740

Aliases

arxiv: 1412.4468 · arxiv_version: 1412.4468v3 · doi: 10.48550/arxiv.1412.4468 · pith_short_12: WLVU7PNKSW4U · pith_short_16: WLVU7PNKSW4UROS4 · pith_short_8: WLVU7PNK

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/WLVU7PNKSW4UROS4NS4YIF7HXZ \
  | 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: b2eb4fbdaa95b948ba5c6cb98417e7be69233ac0df57e02fa4141f3fc4345740

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f64575feddf24d7cea763bbebd0417e50608979f6005da96988426edfab7465d",
    "cross_cats_sorted": [
      "cond-mat.soft"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2014-12-15T06:07:52Z",
    "title_canon_sha256": "c908d37d9f79c9c6bb139df5412e36b63a4a2675203708ea369eb42ed39b2d3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.4468",
    "kind": "arxiv",
    "version": 3
  }
}