Pith Number

pith:HYRVUVNQ

pith:2006:HYRVUVNQPGJFEMTTVIE7ETACM2

not attested not anchored not stored refs pending

Universal and phase covariant superbroadcasting for mixed qubit states

Chiara Macchiavello, Francesco Buscemi, Giacomo Mauro D'Ariano, Paolo Perinotti

arxiv:quant-ph/0602125 v1 · 2006-02-15 · 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{HYRVUVNQPGJFEMTTVIE7ETACM2}

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	2026-07-04T14:53:30.295068Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e235a55b07992523273aa09f24c026682349e407a09d18f8709d50f1d06fa25

Aliases

arxiv: quant-ph/0602125 · arxiv_version: quant-ph/0602125v1 · doi: 10.48550/arxiv.quant-ph/0602125 · pith_short_12: HYRVUVNQPGJF · pith_short_16: HYRVUVNQPGJFEMTT · pith_short_8: HYRVUVNQ

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/HYRVUVNQPGJFEMTTVIE7ETACM2 \
  | 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: 3e235a55b07992523273aa09f24c026682349e407a09d18f8709d50f1d06fa25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7abb164f4e5d4465d32a4f9c00c86808d690ae01dd2d1e5e8e05ac20a2dad34",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2006-02-15T09:08:22Z",
    "title_canon_sha256": "99f3f79bdc3f4cd8539543f1c4b64fde9bd836e035b695e15585a476799c5343"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0602125",
    "kind": "arxiv",
    "version": 1
  }
}