Pith Number

pith:5CACBUBL

pith:2009:5CACBUBLEPN3KXGEA7BCVMMZWA

not attested not anchored not stored refs pending

Tractable measure of nonclassical correlation using density matrix truncations

Akira SaiToh, Mikio Nakahara, Robabeh Rahimi

arxiv:0906.4187 v6 · 2009-06-23 · 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{5CACBUBLEPN3KXGEA7BCVMMZWA}

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	2026-05-18T04:19:32.700420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e88020d02b23dbb55cc407c22ab199b03495f578a8d3ca4eb3a734bf106d4b15

Aliases

arxiv: 0906.4187 · arxiv_version: 0906.4187v6 · doi: 10.48550/arxiv.0906.4187 · pith_short_12: 5CACBUBLEPN3 · pith_short_16: 5CACBUBLEPN3KXGE · pith_short_8: 5CACBUBL

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/5CACBUBLEPN3KXGEA7BCVMMZWA \
  | 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: e88020d02b23dbb55cc407c22ab199b03495f578a8d3ca4eb3a734bf106d4b15

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d249937ad50edb5dacc2420b13f50bd60759c4023caf6c11a6baf38b851b290",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-06-23T08:43:50Z",
    "title_canon_sha256": "0d6b1bed20f6b8c3bd5f856c039ec2a1b5184a2ee6b86884dcbb0b53c4509a3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.4187",
    "kind": "arxiv",
    "version": 6
  }
}