Pith Number

pith:6AAKGXL4

pith:2013:6AAKGXL4FP6EPSQGXGGTKN6DGO

not attested not anchored not stored refs pending

Process optimized quantum cloners via semidefinite programming

L\'ivia Dani, M\'aty\'as Koniorczyk, Vladim\'ir Bu\v{z}ek

arxiv:1304.1326 v2 · 2013-04-04 · 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{6AAKGXL4FP6EPSQGXGGTKN6DGO}

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	2026-05-18T03:18:07.980820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f000a35d7c2bfc47ca06b98d3537c333bfbc4903b66ac3feb932606e63be1251

Aliases

arxiv: 1304.1326 · arxiv_version: 1304.1326v2 · doi: 10.48550/arxiv.1304.1326 · pith_short_12: 6AAKGXL4FP6E · pith_short_16: 6AAKGXL4FP6EPSQG · pith_short_8: 6AAKGXL4

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/6AAKGXL4FP6EPSQGXGGTKN6DGO \
  | 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: f000a35d7c2bfc47ca06b98d3537c333bfbc4903b66ac3feb932606e63be1251

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4412125cbe51971a262e1d48d188ec984b199b46b683acada1905a120f3c5e27",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-04-04T11:19:07Z",
    "title_canon_sha256": "e10a170bd27df27c7cd8849a8d33ac32fa511d112383871a6926904acde4cfdc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.1326",
    "kind": "arxiv",
    "version": 2
  }
}