Pith Number

pith:2WEKI7RM

pith:2019:2WEKI7RM5VQRUMZMUYLKJ2ANH7

not attested not anchored not stored refs pending

Quantum Fisher information matrix in Heisenberg XY model

A. Slaoui, L. Bakmou, M. Daoud, R. Ahl Laamara

arxiv:1904.07507 v1 · 2019-04-16 · 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{2WEKI7RM5VQRUMZMUYLKJ2ANH7}

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	2026-05-17T23:48:25.032403Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d588a47e2ced611a332ca616a4e80d3feca507acc2417256f741177ca0eac0e7

Aliases

arxiv: 1904.07507 · arxiv_version: 1904.07507v1 · doi: 10.48550/arxiv.1904.07507 · pith_short_12: 2WEKI7RM5VQR · pith_short_16: 2WEKI7RM5VQRUMZM · pith_short_8: 2WEKI7RM

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/2WEKI7RM5VQRUMZMUYLKJ2ANH7 \
  | 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: d588a47e2ced611a332ca616a4e80d3feca507acc2417256f741177ca0eac0e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14428071db712172ad24539454b72515242cb200cd1681dc1e18faf65843d782",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-04-16T07:41:34Z",
    "title_canon_sha256": "04032d87b4fcaee64f2f88a306f8118d48a8b78fc1c2b08ccd5152c2a0f362c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.07507",
    "kind": "arxiv",
    "version": 1
  }
}