Pith Number

pith:CURMKNAH

pith:2001:CURMKNAHVCYBFH2MZIG6NPSXWY

not attested not anchored not stored refs pending

Using entanglement improves precision of quantum measurements

G. Mauro D'Ariano, Matteo G. A. Paris, Paoloplacido Lo Presti

arxiv:quant-ph/0109040 v1 · 2001-09-08 · 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{CURMKNAHVCYBFH2MZIG6NPSXWY}

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	2026-05-17T23:46:13.533078Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1522c53407a8b0129f4cca0de6be57b62a6cfc9337c3486494434906ab75eae6

Aliases

arxiv: quant-ph/0109040 · arxiv_version: quant-ph/0109040v1 · doi: 10.48550/arxiv.quant-ph/0109040 · pith_short_12: CURMKNAHVCYB · pith_short_16: CURMKNAHVCYBFH2M · pith_short_8: CURMKNAH

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/CURMKNAHVCYBFH2MZIG6NPSXWY \
  | 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: 1522c53407a8b0129f4cca0de6be57b62a6cfc9337c3486494434906ab75eae6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "732a2f83f683c5d97955b670a8b2e6be7c0e524c0ffdcafe6463d4796ec394e8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2001-09-08T17:06:11Z",
    "title_canon_sha256": "ffe0c48f0f1aa82ef2afa49c437c96c6996a2f875f7d9bdc21a7d135cc5141e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0109040",
    "kind": "arxiv",
    "version": 1
  }
}