Pith Number

pith:4QRK4QXF

pith:2008:4QRK4QXFJEP373IXUV7JZRZRVP

not attested not anchored not stored refs pending

Capacity Bounds for Broadcast Channels with Confidential Messages

Biao Chen, Jin Xu, Yi Cao

arxiv:0805.4374 v1 · 2008-05-28 · 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{4QRK4QXFJEP373IXUV7JZRZRVP}

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	2026-05-18T00:58:48.542856Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e422ae42e5491fbfed17a57e9cc731abf12808eeb87b55368e5cb0c90ddec7f0

Aliases

arxiv: 0805.4374 · arxiv_version: 0805.4374v1 · doi: 10.48550/arxiv.0805.4374 · pith_short_12: 4QRK4QXFJEP3 · pith_short_16: 4QRK4QXFJEP373IX · pith_short_8: 4QRK4QXF

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/4QRK4QXFJEP373IXUV7JZRZRVP \
  | 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: e422ae42e5491fbfed17a57e9cc731abf12808eeb87b55368e5cb0c90ddec7f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f54300846e13d055df819d99337dde5732554c65e09183d5601b8dbca7591a9",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2008-05-28T15:36:46Z",
    "title_canon_sha256": "c6d0498ac705993dea4fe26c11e402949a8ef629157e30fe0b07d0d8212a001a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.4374",
    "kind": "arxiv",
    "version": 1
  }
}