Pith Number

pith:D4LYHR6C

pith:2010:D4LYHR6CJB3NNRGLYRMIGEL6C5

not attested not anchored not stored refs pending

Quantum measurement problem and cluster separability

Petr Hajicek

arxiv:1001.1827 v5 · 2010-01-12 · 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{D4LYHR6CJB3NNRGLYRMIGEL6C5}

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	2026-05-18T04:27:36.238956Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f1783c7c24876d6c4cbc45883117e17597897bfb7e2ac33c1222cde6dc2b715

Aliases

arxiv: 1001.1827 · arxiv_version: 1001.1827v5 · doi: 10.48550/arxiv.1001.1827 · pith_short_12: D4LYHR6CJB3N · pith_short_16: D4LYHR6CJB3NNRGL · pith_short_8: D4LYHR6C

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/D4LYHR6CJB3NNRGLYRMIGEL6C5 \
  | 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: 1f1783c7c24876d6c4cbc45883117e17597897bfb7e2ac33c1222cde6dc2b715

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39a437182fb4cd1743da064dc2d424bdc487b8395b6515e42c0e468b117c6c56",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-01-12T09:14:23Z",
    "title_canon_sha256": "5e9af08edb032c23f11a1a792f290d8fb86b580ea40109a00adfb8b33e5796b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.1827",
    "kind": "arxiv",
    "version": 5
  }
}