Pith Number

pith:NZ2BD6L4

pith:2019:NZ2BD6L4PAFAVKET55QDF6QGJW

not attested not anchored not stored refs pending

Tighter constraints of multiqubit entanglement

Bin Chen, Long-Mei Yang, Shao-Ming Fei, Zhi-Xi Wang

arxiv:1906.03571 v1 · 2019-06-09 · 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{NZ2BD6L4PAFAVKET55QDF6QGJW}

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	2026-05-17T23:43:48.081770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e7411f97c780a0aa893ef6032fa064db28f10ae5363a5bc0ded1bbbe1ce64cb

Aliases

arxiv: 1906.03571 · arxiv_version: 1906.03571v1 · doi: 10.48550/arxiv.1906.03571 · pith_short_12: NZ2BD6L4PAFA · pith_short_16: NZ2BD6L4PAFAVKET · pith_short_8: NZ2BD6L4

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/NZ2BD6L4PAFAVKET55QDF6QGJW \
  | 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: 6e7411f97c780a0aa893ef6032fa064db28f10ae5363a5bc0ded1bbbe1ce64cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "987daaa0ebdb654d318e5caef6986e973faad97f3ff4d0b9b6f8bbfadca47e64",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-06-09T05:36:19Z",
    "title_canon_sha256": "f3b5b1f0f3a0e1e76fdd0448fff0a6dfb5a5d2e3a8b8a37238255ec9b34e4b39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.03571",
    "kind": "arxiv",
    "version": 1
  }
}