Pith Number

pith:K7OBKRNR

pith:2005:K7OBKRNRKQ6KSLJNLM54BDOL5T

not attested not anchored not stored refs pending

Towards efficient algorithm deciding separability of distributed quantum states

Pawel Horodecki, Piotr Badziag, Ryszard Horodecki

arxiv:quant-ph/0504041 v1 · 2005-04-06 · 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{K7OBKRNRKQ6KSLJNLM54BDOL5T}

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	2026-07-04T14:46:56.983469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57dc1545b1543ca92d2d5b3bc08dcbecef3645dec40dc3e4cd13d65b62a4e496

Aliases

arxiv: quant-ph/0504041 · arxiv_version: quant-ph/0504041v1 · doi: 10.48550/arxiv.quant-ph/0504041 · pith_short_12: K7OBKRNRKQ6K · pith_short_16: K7OBKRNRKQ6KSLJN · pith_short_8: K7OBKRNR

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/K7OBKRNRKQ6KSLJNLM54BDOL5T \
  | 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: 57dc1545b1543ca92d2d5b3bc08dcbecef3645dec40dc3e4cd13d65b62a4e496

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3cfc9e7851a971cfd560db61f38811537e141e402e98c0639a070e8224cd614",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-04-06T15:25:30Z",
    "title_canon_sha256": "8eef06bf0a2cf6e5e30f0f7dacf85753a9f13b6614f07e60719f75b31922871e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0504041",
    "kind": "arxiv",
    "version": 1
  }
}