Pith Number

pith:U7ZKZING

pith:2007:U7ZKZINGDHWP2U2E77IINE35BE

not attested not anchored not stored refs pending

Concurrence-based entanglement measure for Werner States

Kai Chen, Sergio Albeverio, Shao-Ming Fei

arxiv:quant-ph/0702017 v1 · 2007-02-02 · 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{U7ZKZINGDHWP2U2E77IINE35BE}

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	2026-05-18T03:41:59.176726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7f2aca1a619ecfd5344ffd086937d0918f59837f457983c08e71302e2041325

Aliases

arxiv: quant-ph/0702017 · arxiv_version: quant-ph/0702017v1 · doi: 10.48550/arxiv.quant-ph/0702017 · pith_short_12: U7ZKZINGDHWP · pith_short_16: U7ZKZINGDHWP2U2E · pith_short_8: U7ZKZING

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/U7ZKZINGDHWP2U2E77IINE35BE \
  | 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: a7f2aca1a619ecfd5344ffd086937d0918f59837f457983c08e71302e2041325

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5aeb146e51e9e880b4570d338f2d2f6de7f8da2aaeb9609d7efb264f921823d0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2007-02-02T10:15:52Z",
    "title_canon_sha256": "27269d00ee0c1b4198ade1f8635714c2cf8b37d96f6bbb98012e1a94c288f205"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0702017",
    "kind": "arxiv",
    "version": 1
  }
}