Pith Number

pith:Y2QMWEOG

pith:2019:Y2QMWEOGLI6AL2NHVWHI5L2TFB

not attested not anchored not stored refs pending

A Blahut-Arimoto Type Algorithm for Computing Classical-Quantum Channel Capacity

Haobo Li, Ning Cai

arxiv:1904.11188 v1 · 2019-04-25 · quant-ph · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y2QMWEOGLI6AL2NHVWHI5L2TFB}

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	2026-05-17T23:47:45.551906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6a0cb11c65a3c05e9a7ad8e8eaf53284cd8be24e2b28a332188f5b4ec859f44

Aliases

arxiv: 1904.11188 · arxiv_version: 1904.11188v1 · doi: 10.48550/arxiv.1904.11188 · pith_short_12: Y2QMWEOGLI6A · pith_short_16: Y2QMWEOGLI6AL2NH · pith_short_8: Y2QMWEOG

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/Y2QMWEOGLI6AL2NHVWHI5L2TFB \
  | 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: c6a0cb11c65a3c05e9a7ad8e8eaf53284cd8be24e2b28a332188f5b4ec859f44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ef554938811c1317e31994dfe6e96493e891c5bafd49f0f863edf4edbb4a8c4",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-04-25T07:42:25Z",
    "title_canon_sha256": "7f2d9c414ac8631234aa46c3702027ebe18bb0fc938d0b7769a4a23471dac037"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.11188",
    "kind": "arxiv",
    "version": 1
  }
}