Pith Number

pith:4NRKGTVE

pith:2009:4NRKGTVEWG6UUAYT6LMMQ25NG6

not attested not anchored not stored refs pending

Multipartite entanglement detection via structure factors

Chiara Macchiavello, Dagmar Bruss, Hermann Kampermann, Leong Chuang Kwek, Philipp Krammer, Reinhold A. Bertlmann

arxiv:0904.3860 v2 · 2009-04-24 · 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{4NRKGTVEWG6UUAYT6LMMQ25NG6}

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.

Cited by

1 paper in Pith

Estimating the best separable approximation of non-pure spin-squeezed states

Receipt and verification

First computed	2026-07-04T15:49:45.677737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e362a34ea4b1bd4a0313f2d8c86bad37b7350ff11b6074bf0492d2607a6c3e9f

Aliases

arxiv: 0904.3860 · arxiv_version: 0904.3860v2 · doi: 10.48550/arxiv.0904.3860 · pith_short_12: 4NRKGTVEWG6U · pith_short_16: 4NRKGTVEWG6UUAYT · pith_short_8: 4NRKGTVE

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/4NRKGTVEWG6UUAYT6LMMQ25NG6 \
  | 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: e362a34ea4b1bd4a0313f2d8c86bad37b7350ff11b6074bf0492d2607a6c3e9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "649b00c73393a560927b61b8e238027a5535e0f590d0c2b60adccf2d8a01c033",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-04-24T12:47:58Z",
    "title_canon_sha256": "550430e7074b849fd601048e328cf768f8b3d7300537872aa8fd45012526e6b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3860",
    "kind": "arxiv",
    "version": 2
  }
}