Pith Number

pith:IMGI77YW

pith:2015:IMGI77YWOHDFERMXAZMLIWUU6R

not attested not anchored not stored refs pending

Entanglement of Four-Qubit Rank-$2$ Mixed States

DaeKil Park, Eylee Jung

arxiv:1505.06261 v1 · 2015-05-23 · quant-ph

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IMGI77YWOHDFERMXAZMLIWUU6R}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:03:47.752962Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

430c8fff1671c65245970658b45a94f455402b907c2a6a2c0941c64e18d329b7

Aliases

arxiv: 1505.06261 · arxiv_version: 1505.06261v1 · doi: 10.48550/arxiv.1505.06261 · pith_short_12: IMGI77YWOHDF · pith_short_16: IMGI77YWOHDFERMX · pith_short_8: IMGI77YW

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/IMGI77YWOHDFERMXAZMLIWUU6R \
  | 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: 430c8fff1671c65245970658b45a94f455402b907c2a6a2c0941c64e18d329b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d6158dc128d3bcd13a36578205bae3220d83fc2f90b715a9d1a8bd3af7367a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-05-23T01:57:07Z",
    "title_canon_sha256": "84b8360d735997cc0a767e17f1b798a6fc6fe7e857e556cb9f11bb6721b29ab3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.06261",
    "kind": "arxiv",
    "version": 1
  }
}