Pith Number

pith:TFSYY5QD

pith:2014:TFSYY5QD6X4QONP27YLNY2S7YO

not attested not anchored not stored refs pending

Coefficient of performance at maximum \chi-criterion for Feynman ratchet as a refrigerator

Pan Yang, Shiqi Sheng, Z.C. Tu

arxiv:1402.6447 v2 · 2014-02-26 · cond-mat.stat-mech

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TFSYY5QD6X4QONP27YLNY2S7YO}

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	2026-05-18T01:44:27.013986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99658c7603f5f90735fafe16dc6a5fc3820d4c590edb4fa1a51baf114fdd1b39

Aliases

arxiv: 1402.6447 · arxiv_version: 1402.6447v2 · doi: 10.48550/arxiv.1402.6447 · pith_short_12: TFSYY5QD6X4Q · pith_short_16: TFSYY5QD6X4QONP2 · pith_short_8: TFSYY5QD

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/TFSYY5QD6X4QONP27YLNY2S7YO \
  | 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: 99658c7603f5f90735fafe16dc6a5fc3820d4c590edb4fa1a51baf114fdd1b39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "072a31e30e16a23e28f6c56259ec2eda53f61cc35babca256e4d14e115f63937",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2014-02-26T08:13:14Z",
    "title_canon_sha256": "d146273ef84ded0723219585765535f5ed581bf9cef2ee8cfe8c77073d380ef5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.6447",
    "kind": "arxiv",
    "version": 2
  }
}