Pith Number

pith:BEJHGDJP

pith:2004:BEJHGDJP2U3YEZWS5VJ3YI3MEM

not attested not anchored not stored refs pending

Bounds on localisable information via semidefinite programming

Barbara Synak, Karol Horodecki, Michal Horodecki

arxiv:quant-ph/0405149 v1 · 2004-05-25 · 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{BEJHGDJP2U3YEZWS5VJ3YI3MEM}

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	2026-05-18T01:37:58.566610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0912730d2fd5378266d2ed53bc236c230c592ef3a9b2c35344ad468191d0e153

Aliases

arxiv: quant-ph/0405149 · arxiv_version: quant-ph/0405149v1 · doi: 10.48550/arxiv.quant-ph/0405149 · pith_short_12: BEJHGDJP2U3Y · pith_short_16: BEJHGDJP2U3YEZWS · pith_short_8: BEJHGDJP

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/BEJHGDJP2U3YEZWS5VJ3YI3MEM \
  | 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: 0912730d2fd5378266d2ed53bc236c230c592ef3a9b2c35344ad468191d0e153

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94e72974d13f90916cbb674de5b5b68be5a2d442bc9b34b0fb5bfad1ec39dcac",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2004-05-25T13:15:46Z",
    "title_canon_sha256": "9ba6fd47a966346f93da1d22ad10949e354240c56799ac24a88069c215d84a29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0405149",
    "kind": "arxiv",
    "version": 1
  }
}