Pith Number

pith:SHPJ5YMZ

pith:2012:SHPJ5YMZNDXH7TN7X2PQBUYAMK

not attested not anchored not stored refs pending

Finite Alphabet Iterative Decoders, Part II: Improved Guaranteed Error Correction of LDPC Codes via Iterative Decoder Diversity

Bane Vasic, David Declercq, Erbao Li, Shiva Kumar Planjery

arxiv:1207.4807 v1 · 2012-07-19 · 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{SHPJ5YMZNDXH7TN7X2PQBUYAMK}

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	2026-05-18T00:58:42.905683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91de9ee19968ee7fcdbfbe9f00d30062a25719bf9475e96b8429216a4f58dedb

Aliases

arxiv: 1207.4807 · arxiv_version: 1207.4807v1 · doi: 10.48550/arxiv.1207.4807 · pith_short_12: SHPJ5YMZNDXH · pith_short_16: SHPJ5YMZNDXH7TN7 · pith_short_8: SHPJ5YMZ

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/SHPJ5YMZNDXH7TN7X2PQBUYAMK \
  | 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: 91de9ee19968ee7fcdbfbe9f00d30062a25719bf9475e96b8429216a4f58dedb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e144dc8b682e8931b04f33c0a7d26165db1913c0473f6a45c3a6f775cb1972a",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-07-19T20:34:30Z",
    "title_canon_sha256": "3417c6fa63d75075efbdcd1af6d4bb4f64e863dc3a97ff4240fb7b248c36cbd6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.4807",
    "kind": "arxiv",
    "version": 1
  }
}