Pith Number

pith:6QLJADIJ

pith:2008:6QLJADIJSBXUXNHGK2UJEVLOKY

not attested not anchored not stored refs pending

Emergence of classicality in small number entangled systems

Eduardo Mascarenhas, Marcelo Fran\c{c}a Santos

arxiv:0809.5184 v1 · 2008-09-30 · 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{6QLJADIJSBXUXNHGK2UJEVLOKY}

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	2026-05-18T04:21:11.122427Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f416900d09906f4bb4e656a892556e562a917e00f54e6c73ad802d1ded7d29e7

Aliases

arxiv: 0809.5184 · arxiv_version: 0809.5184v1 · doi: 10.48550/arxiv.0809.5184 · pith_short_12: 6QLJADIJSBXU · pith_short_16: 6QLJADIJSBXUXNHG · pith_short_8: 6QLJADIJ

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/6QLJADIJSBXUXNHGK2UJEVLOKY \
  | 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: f416900d09906f4bb4e656a892556e562a917e00f54e6c73ad802d1ded7d29e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5bc06339fc02a311e10b73e3a960a74e85dcce5aedc482b665fae125237b691",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2008-09-30T12:34:00Z",
    "title_canon_sha256": "864d96296cd940f429cfb814c2bf6de4d59fef6c485625d1ef0d9ba77a53bb16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.5184",
    "kind": "arxiv",
    "version": 1
  }
}