Pith Number

pith:2XHQJMWV

pith:2010:2XHQJMWVRHX7IOKGUR2UO6T4ML

not attested not anchored not stored refs pending

Classical and Quantum Fisher Information in the Geometrical Formulation of Quantum Mechanics

E. C. G. Sudarshan, Franco Ventriglia, Giuseppe Marmo, Paolo Facchi, Ravi Kulkarni, V. I. Man'ko

arxiv:1009.5219 v1 · 2010-09-27 · 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{2XHQJMWVRHX7IOKGUR2UO6T4ML}

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	2026-05-18T04:34:45.775599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5cf04b2d589eff43946a475477a7c62e3022839773f21eb0197982eb314ba76

Aliases

arxiv: 1009.5219 · arxiv_version: 1009.5219v1 · doi: 10.48550/arxiv.1009.5219 · pith_short_12: 2XHQJMWVRHX7 · pith_short_16: 2XHQJMWVRHX7IOKG · pith_short_8: 2XHQJMWV

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/2XHQJMWVRHX7IOKGUR2UO6T4ML \
  | 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: d5cf04b2d589eff43946a475477a7c62e3022839773f21eb0197982eb314ba76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d793c2622fd35af8041d1a7eeeaa01d40ed8a5b31d7f11006ff6c80b2f635f8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-09-27T10:56:59Z",
    "title_canon_sha256": "62c27ac72fa16f4c9893954e7ad316b95b2c54529b72faa051f682bf60739ab0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.5219",
    "kind": "arxiv",
    "version": 1
  }
}