Pith Number

pith:KYHFNPCB

pith:2018:KYHFNPCBAZKOTTJVI4W3REKP2Y

not attested not anchored not stored refs pending

Quantum Fisher information matrix for unitary processes: closed relation for $SU(2)$

Mohammad Javad Shemshadi, Seyed Javad Akhtarshenas

arxiv:1807.02690 v2 · 2018-07-07 · 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{KYHFNPCBAZKOTTJVI4W3REKP2Y}

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	2026-05-18T00:00:43.236665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

560e56bc410654e9cd35472db8914fd61f4b3844c0ea21d2b4f5e82fd72ed080

Aliases

arxiv: 1807.02690 · arxiv_version: 1807.02690v2 · doi: 10.48550/arxiv.1807.02690 · pith_short_12: KYHFNPCBAZKO · pith_short_16: KYHFNPCBAZKOTTJV · pith_short_8: KYHFNPCB

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/KYHFNPCBAZKOTTJVI4W3REKP2Y \
  | 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: 560e56bc410654e9cd35472db8914fd61f4b3844c0ea21d2b4f5e82fd72ed080

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ceaa48abdd66da3fb777f7e5f5a9ec81438847e2609e3d56a51ee04b2b77644b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-07-07T16:45:55Z",
    "title_canon_sha256": "7fc7ae703679bf59d761be05f52b25e95ddfee9f1c702348f82572c02374c079"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.02690",
    "kind": "arxiv",
    "version": 2
  }
}