Pith Number

pith:U7SGHGDP

pith:2013:U7SGHGDPDP2PKWWGIHKFMEH34N

not attested not anchored not stored refs pending

Experimental estimation of quantum discord for polarization qubit and the use of fidelity to assess quantum correlations

Alexander P. Shurupov, Claudia Benedetti, Giorgio Brida, Marco Genovese, Matteo G. A. Paris

arxiv:1305.4475 v2 · 2013-05-20 · 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{U7SGHGDPDP2PKWWGIHKFMEH34N}

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	2026-05-18T03:22:16.840020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7e463986f1bf4f55ac641d45610fbe3543175086cf5ffed9f977925cb4a06a0

Aliases

arxiv: 1305.4475 · arxiv_version: 1305.4475v2 · doi: 10.48550/arxiv.1305.4475 · pith_short_12: U7SGHGDPDP2P · pith_short_16: U7SGHGDPDP2PKWWG · pith_short_8: U7SGHGDP

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/U7SGHGDPDP2PKWWGIHKFMEH34N \
  | 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: a7e463986f1bf4f55ac641d45610fbe3543175086cf5ffed9f977925cb4a06a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3426f4e830923aac096acb2113fac2bee57cc91b40b76d8ccbf1168158a5f34",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-05-20T09:45:54Z",
    "title_canon_sha256": "5690feaf94057307f6c7f1b3089050360c4525dc111594ab4c37d19870376c34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.4475",
    "kind": "arxiv",
    "version": 2
  }
}