Pith Number

pith:UGFAPQ23

pith:2005:UGFAPQ23Z6PR2XXAZC2E53K4N2

not attested not anchored not stored refs pending

Local uncertainty relations serving as measures of entanglement in a bipartite two-level system

Gunnar Bj\"ork, Simon Samuelsson

arxiv:quant-ph/0508235 v1 · 2005-08-31 · 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{UGFAPQ23Z6PR2XXAZC2E53K4N2}

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	2026-05-18T01:08:45.601602Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a18a07c35bcf9f1d5ee0c8b44eed5c6e8fe83388e5e94d2f66e21a53bafda322

Aliases

arxiv: quant-ph/0508235 · arxiv_version: quant-ph/0508235v1 · doi: 10.48550/arxiv.quant-ph/0508235 · pith_short_12: UGFAPQ23Z6PR · pith_short_16: UGFAPQ23Z6PR2XXA · pith_short_8: UGFAPQ23

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/UGFAPQ23Z6PR2XXAZC2E53K4N2 \
  | 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: a18a07c35bcf9f1d5ee0c8b44eed5c6e8fe83388e5e94d2f66e21a53bafda322

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fcd90cb128817b8be671d6c1c9427d79120fccdebd65daf61173e7c2e99705b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-08-31T10:04:54Z",
    "title_canon_sha256": "3b1dedcd5781d841945868470fcf5e98f2e931d77d26bf676fd1d6f46bf8b548"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0508235",
    "kind": "arxiv",
    "version": 1
  }
}