Pith Number

pith:XNQMFO3G

pith:2013:XNQMFO3GP3TEBASG6X5Q7AVBEO

not attested not anchored not stored refs pending

Symmetric logarithmic derivative for general n-level systems and the quantum Fisher information tensor for three-level systems

Elisa Ercolessi, Michele Schiavina

arxiv:1301.6500 v3 · 2013-01-28 · quant-ph · math-ph · math.MP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XNQMFO3GP3TEBASG6X5Q7AVBEO}

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	2026-05-18T03:18:18.429232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb60c2bb667ee6408246f5fb0f82a12380de14720bbe61ad15aaa78fc9ec5181

Aliases

arxiv: 1301.6500 · arxiv_version: 1301.6500v3 · doi: 10.48550/arxiv.1301.6500 · pith_short_12: XNQMFO3GP3TE · pith_short_16: XNQMFO3GP3TEBASG · pith_short_8: XNQMFO3G

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/XNQMFO3GP3TEBASG6X5Q7AVBEO \
  | 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: bb60c2bb667ee6408246f5fb0f82a12380de14720bbe61ad15aaa78fc9ec5181

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6cd86905b3ccd10cc46ce180f84ce33da1dfabfeaff5f55c2a9ca6acfc24c1de",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-01-28T10:13:38Z",
    "title_canon_sha256": "a7ba9bdfc88b8bee40127a9324b4c97ccfa0f50bf1155de295d04a227ac81e98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.6500",
    "kind": "arxiv",
    "version": 3
  }
}