Pith Number

pith:M66Q6J4N

pith:2009:M66Q6J4NJ6UHHMS4AMLQ3KXYEZ

not attested not anchored not stored refs pending

Modified Fermi-sphere, pairing gap and critical temperature for the BCS-BEC crossover

C. Wetterich, M. M. Scherer, S. Floerchinger

arxiv:0912.4050 v3 · 2009-12-20 · cond-mat.quant-gas

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M66Q6J4NJ6UHHMS4AMLQ3KXYEZ}

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	2026-05-18T04:36:18.763769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67bd0f278d4fa873b25c03170daaf826471c66d3205155e563a7715c25ae1179

Aliases

arxiv: 0912.4050 · arxiv_version: 0912.4050v3 · doi: 10.48550/arxiv.0912.4050 · pith_short_12: M66Q6J4NJ6UH · pith_short_16: M66Q6J4NJ6UHHMS4 · pith_short_8: M66Q6J4N

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/M66Q6J4NJ6UHHMS4AMLQ3KXYEZ \
  | 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: 67bd0f278d4fa873b25c03170daaf826471c66d3205155e563a7715c25ae1179

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fb3c1006b6ccafebf327544ca2269aeb0756d3f89e7d8d708b10793dac622b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.quant-gas",
    "submitted_at": "2009-12-20T20:42:29Z",
    "title_canon_sha256": "552d6baaf4595d7575297516f3ffcb70d1a1693b968562a5206e3f9f28ada2b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4050",
    "kind": "arxiv",
    "version": 3
  }
}