Pith Number

pith:I73ZV2UV

pith:1999:I73ZV2UV6VIQQTMUU4AYLJNVYM

not attested not anchored not stored refs pending

Entanglement splitting of pure bipartite quantum states

Dagmar Bruss

arxiv:quant-ph/9902023 v2 · 1999-02-05 · 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{I73ZV2UV6VIQQTMUU4AYLJNVYM}

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	2026-07-04T16:15:39.812175Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47f79aea95f551084d94a70185a5b5c31a20aa2e531e77d4fff3dc3ebf10e44c

Aliases

arxiv: quant-ph/9902023 · arxiv_version: quant-ph/9902023v2 · doi: 10.48550/arxiv.quant-ph/9902023 · pith_short_12: I73ZV2UV6VIQ · pith_short_16: I73ZV2UV6VIQQTMU · pith_short_8: I73ZV2UV

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/I73ZV2UV6VIQQTMUU4AYLJNVYM \
  | 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: 47f79aea95f551084d94a70185a5b5c31a20aa2e531e77d4fff3dc3ebf10e44c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf50078e7cfdec64c09125202e6bfffb2d2e1d2b1767993d68685a3bb04ba9ce",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1999-02-05T17:21:01Z",
    "title_canon_sha256": "1f1998aa43d482554c67e98f0018e50d5657e9b3e9dd328799179c1c29e84653"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9902023",
    "kind": "arxiv",
    "version": 2
  }
}