Pith Number

pith:HQ4EIC3N

pith:2025:HQ4EIC3N4XGGT7IVOHG4XRVRTO

not attested not anchored not stored refs pending

Entanglement in Quantum Systems Based on Directed Graphs

Lucio De Simone, Roberto Franzosi

arxiv:2509.05214 v1 · 2025-09-05 · 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{HQ4EIC3N4XGGT7IVOHG4XRVRTO}

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	2026-07-05T12:05:37.924147Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c38440b6de5cc69fd1571cdcbc6b19bad302e892fbc63118fbe51fb331ea93b

Aliases

arxiv: 2509.05214 · arxiv_version: 2509.05214v1 · doi: 10.48550/arxiv.2509.05214 · pith_short_12: HQ4EIC3N4XGG · pith_short_16: HQ4EIC3N4XGGT7IV · pith_short_8: HQ4EIC3N

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/HQ4EIC3N4XGGT7IVOHG4XRVRTO \
  | 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: 3c38440b6de5cc69fd1571cdcbc6b19bad302e892fbc63118fbe51fb331ea93b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6ac74e5aab67887f74437d710417fd806c761f2d4d8155619c3ea54cb95cca4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-09-05T16:17:03Z",
    "title_canon_sha256": "96b7801ef10999382a9ddf3b4e95040d679b23a6a5515ad6e15fc8a7125161b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.05214",
    "kind": "arxiv",
    "version": 1
  }
}