Pith Number

pith:7IZXCK24

pith:2014:7IZXCK24KEFPQUHX7EKSED2O4Y

not attested not anchored not stored refs pending

Lower Bound of Concurrence for Qubit Systems

Shao-Ming Fei, Xue-Na Zhu

arxiv:1401.0622 v2 · 2014-01-03 · 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{7IZXCK24KEFPQUHX7EKSED2O4Y}

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	2026-05-18T02:59:33.888860Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa33712b5c510af850f7f915220f4ee6033ddfed27b6a5c6df4fe8e9da885354

Aliases

arxiv: 1401.0622 · arxiv_version: 1401.0622v2 · doi: 10.48550/arxiv.1401.0622 · pith_short_12: 7IZXCK24KEFP · pith_short_16: 7IZXCK24KEFPQUHX · pith_short_8: 7IZXCK24

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/7IZXCK24KEFPQUHX7EKSED2O4Y \
  | 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: fa33712b5c510af850f7f915220f4ee6033ddfed27b6a5c6df4fe8e9da885354

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2a89e335f0c5c4e4e9f410f135ff726da3b7061161c51bc31181bac0154a48f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-01-03T11:07:15Z",
    "title_canon_sha256": "910b7ea23914024a6860628d727c1ea232ba652ad1891191e21a7828bffe1e76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.0622",
    "kind": "arxiv",
    "version": 2
  }
}