Pith Number

pith:GNY3NOU6

pith:2015:GNY3NOU6M5PJFHFNGWEZ46QFNF

not attested not anchored not stored refs pending

Optimal witnessing of the quantum Fisher information with few measurements

Geza Toth, Iagoba Apellaniz, Matthias Kleinmann, Otfried G\"uhne

arxiv:1511.05203 v2 · 2015-11-16 · 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{GNY3NOU6M5PJFHFNGWEZ46QFNF}

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

Leggett-Garg Inequality Violations Bound Quantum Fisher Information

Receipt and verification

First computed	2026-05-18T00:45:54.549818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3371b6ba9e675e929cad35899e7a05697b6e37e54c54ccf03129eea215ed33dd

Aliases

arxiv: 1511.05203 · arxiv_version: 1511.05203v2 · doi: 10.48550/arxiv.1511.05203 · pith_short_12: GNY3NOU6M5PJ · pith_short_16: GNY3NOU6M5PJFHFN · pith_short_8: GNY3NOU6

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/GNY3NOU6M5PJFHFNGWEZ46QFNF \
  | 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: 3371b6ba9e675e929cad35899e7a05697b6e37e54c54ccf03129eea215ed33dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15167fb135ba94ad526549cd2a0fe3c492b94fd742e3b0cce01d956fc824e436",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-11-16T22:12:23Z",
    "title_canon_sha256": "d191ab5e4d7d82774d6b198c0979107ec7c6a40328db9fb766b4ef86822b62c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.05203",
    "kind": "arxiv",
    "version": 2
  }
}