Pith Number

pith:KUPQUHBU

pith:2010:KUPQUHBU2YAHO6CZESNH27SJDA

not attested not anchored not stored refs pending

Measurable bounds for Entanglement of Formation

Ming Li, Shao-Ming Fei

arxiv:1010.4969 v1 · 2010-10-24 · 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{KUPQUHBU2YAHO6CZESNH27SJDA}

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	2026-05-18T02:04:59.140935Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

551f0a1c34d600777859249a7d7e491824ea29341ee6b10be9d2a3a43c5ddf84

Aliases

arxiv: 1010.4969 · arxiv_version: 1010.4969v1 · doi: 10.48550/arxiv.1010.4969 · pith_short_12: KUPQUHBU2YAH · pith_short_16: KUPQUHBU2YAHO6CZ · pith_short_8: KUPQUHBU

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/KUPQUHBU2YAHO6CZESNH27SJDA \
  | 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: 551f0a1c34d600777859249a7d7e491824ea29341ee6b10be9d2a3a43c5ddf84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "356583b2e11cda8bf5f7e5a976199c635c1da347e3143c4875f871fc9903dbf5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-10-24T15:15:03Z",
    "title_canon_sha256": "e70f303ef41971809392b76a225211460df80c2aee315dd532e2f8a06fa63320"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.4969",
    "kind": "arxiv",
    "version": 1
  }
}