Pith Number

pith:7ZEI5CKV

pith:2013:7ZEI5CKVJONPHZ4XRWGEAVCK5H

not attested not anchored not stored refs pending

Entanglement Witnessing based on Positive Maps: Characterization of a Class of Bipartite n x n qubit Systems

Mahya Karbalaii

arxiv:1301.0692 v1 · 2013-01-04 · math-ph · math.MP · 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{7ZEI5CKVJONPHZ4XRWGEAVCK5H}

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	2026-05-18T03:37:17.886266Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe488e89554b9af3e7978d8c40544ae9d2dfc86ded0baf234aedbb746f849d27

Aliases

arxiv: 1301.0692 · arxiv_version: 1301.0692v1 · doi: 10.48550/arxiv.1301.0692 · pith_short_12: 7ZEI5CKVJONP · pith_short_16: 7ZEI5CKVJONPHZ4X · pith_short_8: 7ZEI5CKV

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/7ZEI5CKVJONPHZ4XRWGEAVCK5H \
  | 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: fe488e89554b9af3e7978d8c40544ae9d2dfc86ded0baf234aedbb746f849d27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0282a53bd99cc8713738095e848782ddef044569be085e69f09a03a0daf0fe10",
    "cross_cats_sorted": [
      "math.MP",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2013-01-04T09:37:44Z",
    "title_canon_sha256": "cb7bbfb01d75b627b80ac4d46bfccf34df8246efd171ce69a7f23b305f6377ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.0692",
    "kind": "arxiv",
    "version": 1
  }
}