Pith Number

pith:XR4XU3H5

pith:2018:XR4XU3H5257QXEOLRDA6EY2OBQ

not attested not anchored not stored refs pending

The BCS-BEC crossover: From ultra-cold Fermi gases to nuclear systems

Gerd Roepke, Giancarlo Calvanese Strinati, Michael Urban, Peter Schuck, Pierbiagio Pieri

arxiv:1802.05997 v2 · 2018-02-16 · cond-mat.quant-gas · cond-mat.str-el · cond-mat.supr-con · nucl-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XR4XU3H5257QXEOLRDA6EY2OBQ}

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	2026-05-18T00:18:05.010716Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc797a6cfdd77f0b91cb88c1e2634e0c1321bf0a8ec9b81622bbbafa1e396b3e

Aliases

arxiv: 1802.05997 · arxiv_version: 1802.05997v2 · doi: 10.48550/arxiv.1802.05997 · pith_short_12: XR4XU3H5257Q · pith_short_16: XR4XU3H5257QXEOL · pith_short_8: XR4XU3H5

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/XR4XU3H5257QXEOLRDA6EY2OBQ \
  | 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: bc797a6cfdd77f0b91cb88c1e2634e0c1321bf0a8ec9b81622bbbafa1e396b3e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad8d6c1f61fca5b3350519af438a35b4f442c35cfb8b1cefdbed1132939be87a",
    "cross_cats_sorted": [
      "cond-mat.str-el",
      "cond-mat.supr-con",
      "nucl-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.quant-gas",
    "submitted_at": "2018-02-16T16:06:40Z",
    "title_canon_sha256": "d68603a19121facebc4a632bb1edeaea6ef94eb44cbdbf98779f00dbe2ed5788"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.05997",
    "kind": "arxiv",
    "version": 2
  }
}