Pith Number

pith:PIE5QBM6

pith:2011:PIE5QBM6SFQ5PRHB754C2DDVZP

not attested not anchored not stored refs pending

Heat Capacity and Entanglement Measure in a simple two-qubit model

A. Messina, A. Napoli, B.Leggio, H. Nakazato

arxiv:1104.1116 v1 · 2011-04-06 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PIE5QBM6SFQ5PRHB754C2DDVZP}

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	2026-05-18T04:24:53.590865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a09d8059e9161d7c4e1ff782d0c75cbe482bbb588dce524c39db115866de837

Aliases

arxiv: 1104.1116 · arxiv_version: 1104.1116v1 · doi: 10.48550/arxiv.1104.1116 · pith_short_12: PIE5QBM6SFQ5 · pith_short_16: PIE5QBM6SFQ5PRHB · pith_short_8: PIE5QBM6

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/PIE5QBM6SFQ5PRHB754C2DDVZP \
  | 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: 7a09d8059e9161d7c4e1ff782d0c75cbe482bbb588dce524c39db115866de837

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aec91edadacb3440f0687d0bb368aa399ec4ce1ce7839e7f36b3efcc6e2acfb2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-04-06T14:45:56Z",
    "title_canon_sha256": "9dd836693afa6333a64b6a37fbce50b7f19fea939fcea1af0931727966b7cf82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.1116",
    "kind": "arxiv",
    "version": 1
  }
}