Pith Number

pith:LKGHCOWD

pith:2003:LKGHCOWDZWUCL6BCAZVYSK3D7K

not attested not anchored not stored refs pending

Noise enhancing the classical information capacity of a quantum channel

Garry Bowen, Stefano Mancini

arxiv:quant-ph/0311126 v1 · 2003-11-19 · 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{LKGHCOWDZWUCL6BCAZVYSK3D7K}

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	2026-05-18T01:37:58.935251Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a8c713ac3cda825f822066b892b63fa96f88aeb9682a73ebac776d7b88e59a4

Aliases

arxiv: quant-ph/0311126 · arxiv_version: quant-ph/0311126v1 · doi: 10.48550/arxiv.quant-ph/0311126 · pith_short_12: LKGHCOWDZWUC · pith_short_16: LKGHCOWDZWUCL6BC · pith_short_8: LKGHCOWD

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/LKGHCOWDZWUCL6BCAZVYSK3D7K \
  | 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: 5a8c713ac3cda825f822066b892b63fa96f88aeb9682a73ebac776d7b88e59a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b899bded9a5e7541f995c1d6a9fbd2b142456743c5a01cfdf4f0f57c6463a05",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2003-11-19T12:14:46Z",
    "title_canon_sha256": "ca7b3a48c0e720450938ad4482f37c4be149203df25c4ac9534a68d29e8286f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0311126",
    "kind": "arxiv",
    "version": 1
  }
}