Pith Number

pith:7V6UUGWI

pith:2013:7V6UUGWIMV44JYXEQOXS6FRV3V

not attested not anchored not stored refs pending

Entanglement of formation for qubit-qudit system using partition of qudit sytem into a set of qubit system

W. B. Cardoso, Wen-Chao Qiang

arxiv:1302.2212 v1 · 2013-02-09 · 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{7V6UUGWIMV44JYXEQOXS6FRV3V}

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	2026-05-18T01:51:43.127644Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd7d4a1ac86579c4e2e483af2f1635dd49ce3ca6cd8eb86907288b6c8add8cf2

Aliases

arxiv: 1302.2212 · arxiv_version: 1302.2212v1 · doi: 10.48550/arxiv.1302.2212 · pith_short_12: 7V6UUGWIMV44 · pith_short_16: 7V6UUGWIMV44JYXE · pith_short_8: 7V6UUGWI

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/7V6UUGWIMV44JYXEQOXS6FRV3V \
  | 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: fd7d4a1ac86579c4e2e483af2f1635dd49ce3ca6cd8eb86907288b6c8add8cf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "136e5e53f09f0569acff6aac93a1952b74b47113bd569d9eecdad329cdb9f75e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-02-09T10:22:07Z",
    "title_canon_sha256": "8b70ade7116ea40ae778049b5096999bd700343fbc52a0bd4e470746d8ff41c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2212",
    "kind": "arxiv",
    "version": 1
  }
}