Pith Number

pith:PRZZOCPX

pith:2011:PRZZOCPX4YLOUEVDLGUFC77RJH

not attested not anchored not stored refs pending

Bilayer LDPC Convolutional Codes for Half-Duplex Relay Channels

Mikael Skoglund, Ragnar Thobaben, Zhongwei Si

arxiv:1102.5204 v1 · 2011-02-25 · 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{PRZZOCPX4YLOUEVDLGUFC77RJH}

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	2026-05-18T04:27:56.001512Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c739709f7e616ea12a359a8517ff149c47e60b44bc0d9665695cf9daf8924f7

Aliases

arxiv: 1102.5204 · arxiv_version: 1102.5204v1 · doi: 10.48550/arxiv.1102.5204 · pith_short_12: PRZZOCPX4YLO · pith_short_16: PRZZOCPX4YLOUEVD · pith_short_8: PRZZOCPX

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/PRZZOCPX4YLOUEVDLGUFC77RJH \
  | 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: 7c739709f7e616ea12a359a8517ff149c47e60b44bc0d9665695cf9daf8924f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6216b7bd19350e9ba2b5fef295b6cc17ed642a64abba4048813fa0f9678aaa2d",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-02-25T10:29:20Z",
    "title_canon_sha256": "674d5c61bfe4e5cb2251241eb459bfd290f4d90943cb94917f55ea1223fbf0de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.5204",
    "kind": "arxiv",
    "version": 1
  }
}