Pith Number

pith:YT5MGVS6

pith:2015:YT5MGVS6XE35VAB7KKSUII4KQE

not attested not anchored not stored refs pending

Quantum Fisher information and symmetric logarithmic derivative via anti-commutators

Jie Chen, Jing Liu, Xiaoguang Wang, Xiao-Xing Jing

arxiv:1501.04290 v2 · 2015-01-18 · 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{YT5MGVS6XE35VAB7KKSUII4KQE}

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	2026-05-18T01:14:09.392531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4fac3565eb937da803f52a544238a81045fb28410be9dfdf9acd2314f9add11

Aliases

arxiv: 1501.04290 · arxiv_version: 1501.04290v2 · doi: 10.48550/arxiv.1501.04290 · pith_short_12: YT5MGVS6XE35 · pith_short_16: YT5MGVS6XE35VAB7 · pith_short_8: YT5MGVS6

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/YT5MGVS6XE35VAB7KKSUII4KQE \
  | 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: c4fac3565eb937da803f52a544238a81045fb28410be9dfdf9acd2314f9add11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09e6a1b659db7b70b762e0fa3609bd9bc0a6ed15ab0bb8ade3a7689121908bc5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-01-18T12:37:24Z",
    "title_canon_sha256": "b15c09447da3561a50db46097c93f8db9987fb29532a8718533a7ceceabf37c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.04290",
    "kind": "arxiv",
    "version": 2
  }
}