Pith Number

pith:R7Z25ZKT

pith:2010:R7Z25ZKTV5EFSRQYFEK5YIHN7B

not attested not anchored not stored refs pending

Optimal measurements to access classical correlations of two-qubit states

Jian Ma, Xiaoguang Wang, Xiao-Ming Lu, Zhengjun Xi

arxiv:1009.1476 v2 · 2010-09-08 · 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{R7Z25ZKTV5EFSRQYFEK5YIHN7B}

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	2026-05-18T04:29:53.506503Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ff3aee553af485946182915dc20edf843abf6d49e28aa218ac7b1ae96e07080

Aliases

arxiv: 1009.1476 · arxiv_version: 1009.1476v2 · doi: 10.48550/arxiv.1009.1476 · pith_short_12: R7Z25ZKTV5EF · pith_short_16: R7Z25ZKTV5EFSRQY · pith_short_8: R7Z25ZKT

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/R7Z25ZKTV5EFSRQYFEK5YIHN7B \
  | 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: 8ff3aee553af485946182915dc20edf843abf6d49e28aa218ac7b1ae96e07080

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9faa1b0517b00b283280472d883aacc415a82c435acf8a03e42a92c7ca82218c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-09-08T08:21:10Z",
    "title_canon_sha256": "e3719e92f8939e74241fd85982e916dbc5968819821d8c89fdaff462b691c168"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.1476",
    "kind": "arxiv",
    "version": 2
  }
}