Pith Number

pith:FHEM6HBP

pith:2003:FHEM6HBP7657XQ6PENAU6K27AO

not attested not anchored not stored refs pending

A measurable entanglement criterion for two qubits

Gunnar Bj\"ork, Hoshang Heydari, Luis S\'anchez-Soto

arxiv:quant-ph/0308091 v3 · 2003-08-18 · 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{FHEM6HBP7657XQ6PENAU6K27AO}

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	2026-05-18T01:08:59.304664Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29c8cf1c2fffbbfbc3cf23414f2b5f038bb207a77d7cf52e82a4d6a3acb0c38e

Aliases

arxiv: quant-ph/0308091 · arxiv_version: quant-ph/0308091v3 · doi: 10.48550/arxiv.quant-ph/0308091 · pith_short_12: FHEM6HBP7657 · pith_short_16: FHEM6HBP7657XQ6P · pith_short_8: FHEM6HBP

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/FHEM6HBP7657XQ6PENAU6K27AO \
  | 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: 29c8cf1c2fffbbfbc3cf23414f2b5f038bb207a77d7cf52e82a4d6a3acb0c38e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb63a9ea288fc850f534262892a9b4a43d69322a4f888daffb5a2bb828df28a1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2003-08-18T11:51:09Z",
    "title_canon_sha256": "9521089340f3264cfefa74c7ca8329661c53ef553033dff1e3180ee511900e4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0308091",
    "kind": "arxiv",
    "version": 3
  }
}