Pith Number

pith:YZGTSS5Q

pith:2009:YZGTSS5QA6QII77FTS3DTZ6U5I

not attested not anchored not stored refs pending

Optimal thermal refrigerator

Armen E. Allahverdyan, Guenter Mahler, Karen Hovhannisyan

arxiv:0906.2583 v1 · 2009-06-15 · cond-mat.stat-mech · cond-mat.mes-hall

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YZGTSS5QA6QII77FTS3DTZ6U5I}

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	2026-07-04T15:43:50.693471Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c64d394bb007a0847fe59cb639e7d4ea31c2298a7920ec382882321ba8a3cf60

Aliases

arxiv: 0906.2583 · arxiv_version: 0906.2583v1 · doi: 10.48550/arxiv.0906.2583 · pith_short_12: YZGTSS5QA6QI · pith_short_16: YZGTSS5QA6QII77F · pith_short_8: YZGTSS5Q

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/YZGTSS5QA6QII77FTS3DTZ6U5I \
  | 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: c64d394bb007a0847fe59cb639e7d4ea31c2298a7920ec382882321ba8a3cf60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cfce6af1d654ecad5903f37e4075f240071478b309c568a5bc589a95af98ca7",
    "cross_cats_sorted": [
      "cond-mat.mes-hall"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2009-06-15T00:26:59Z",
    "title_canon_sha256": "79ce17eb0efe25ba089e9435738524c2b9d7b40ff2cf674188f2d3711339270a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.2583",
    "kind": "arxiv",
    "version": 1
  }
}