Pith Number

pith:77P6D3WY

pith:2007:77P6D3WYOVMJL5UPXVLSSEQUHG

not attested not anchored not stored refs pending

Quantum Entanglement Capacity with Classical Feedback

Alan W. Leung

arxiv:0709.2953 v4 · 2007-09-19 · 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{77P6D3WYOVMJL5UPXVLSSEQUHG}

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	2026-07-04T17:05:46.188527Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ffdfe1eed8755895f68fbd5729121439b1d9f10fb0a39b3570f2efafe7ba6e46

Aliases

arxiv: 0709.2953 · arxiv_version: 0709.2953v4 · doi: 10.48550/arxiv.0709.2953 · pith_short_12: 77P6D3WYOVMJ · pith_short_16: 77P6D3WYOVMJL5UP · pith_short_8: 77P6D3WY

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/77P6D3WYOVMJL5UPXVLSSEQUHG \
  | 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: ffdfe1eed8755895f68fbd5729121439b1d9f10fb0a39b3570f2efafe7ba6e46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf45d0fe465356d4e83a1d6e87d116883d13fa43e4813e851bf3b5ba32f60584",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2007-09-19T05:47:01Z",
    "title_canon_sha256": "cc97b82680141cb6438b0400fdeb8b6bba237945176c7f66ec1580aef8052833"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.2953",
    "kind": "arxiv",
    "version": 4
  }
}