Pith Number

pith:PON4FCK5

pith:2002:PON4FCK5W7S7YWE7OFAE5O4A4E

not attested not anchored not stored refs pending

The fully entangled fraction as an inclusive measure of entanglement applications

D.F.V. James, D.M. Etlinger, J. Grondalski

arxiv:quant-ph/0208007 v1 · 2002-08-01 · 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{PON4FCK5W7S7YWE7OFAE5O4A4E}

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	2026-05-18T01:37:59.998162Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b9bc2895db7e5fc589f71404ebb80e13db70180278aeb5186acb952d8eddfa9

Aliases

arxiv: quant-ph/0208007 · arxiv_version: quant-ph/0208007v1 · doi: 10.48550/arxiv.quant-ph/0208007 · pith_short_12: PON4FCK5W7S7 · pith_short_16: PON4FCK5W7S7YWE7 · pith_short_8: PON4FCK5

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/PON4FCK5W7S7YWE7OFAE5O4A4E \
  | 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: 7b9bc2895db7e5fc589f71404ebb80e13db70180278aeb5186acb952d8eddfa9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18467bb12552836d5e7fa3664f137bc5751341b4d705b962512eca8d2e1d639e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2002-08-01T17:40:09Z",
    "title_canon_sha256": "0f50a3388e808d3849fdc1042932dc2dfedb5e98be8b9f152df506e50ed4c337"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0208007",
    "kind": "arxiv",
    "version": 1
  }
}