Pith Number

pith:V4R7JVH4

pith:2016:V4R7JVH4GOU2X7EDNM4JN5WAI2

not attested not anchored not stored refs pending

A Necessary and Sufficient Criterion for the Separability of Quantum State

Cong-Feng Qiao, Jun-Li Li

arxiv:1607.03364 v4 · 2016-07-12 · 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{V4R7JVH4GOU2X7EDNM4JN5WAI2}

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	2026-05-18T00:23:23.499498Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af23f4d4fc33a9abfc836b3896f6c0469f9a4c7521ebf61b16947ae146b0335f

Aliases

arxiv: 1607.03364 · arxiv_version: 1607.03364v4 · doi: 10.48550/arxiv.1607.03364 · pith_short_12: V4R7JVH4GOU2 · pith_short_16: V4R7JVH4GOU2X7ED · pith_short_8: V4R7JVH4

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/V4R7JVH4GOU2X7EDNM4JN5WAI2 \
  | 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: af23f4d4fc33a9abfc836b3896f6c0469f9a4c7521ebf61b16947ae146b0335f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be9935dfd48d0c91943ca45124eda4bbb751476c5b18893035afae98a65bf565",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2016-07-12T14:17:29Z",
    "title_canon_sha256": "a9d27371cc6729659d396bd5c101df0066c5c0f783c3fec8aa51a7e4734b1654"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.03364",
    "kind": "arxiv",
    "version": 4
  }
}