Pith Number

pith:XSUQ4SSZ

pith:2007:XSUQ4SSZWT6UYEVM22UYYBCZZ4

not attested not anchored not stored refs pending

Low-Density Parity-Check Codes for Nonergodic Block-Fading Channels

Albert Guillen i Fabregas, Ezio Biglieri, Gilles Zemor, Joseph J. Boutros

arxiv:0710.1182 v1 · 2007-10-05 · 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{XSUQ4SSZWT6UYEVM22UYYBCZZ4}

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	2026-05-18T00:57:58.841259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bca90e4a59b4fd4c12acd6a98c0459cf3cd55c8be726ed119cbe6f0085ddf04b

Aliases

arxiv: 0710.1182 · arxiv_version: 0710.1182v1 · doi: 10.48550/arxiv.0710.1182 · pith_short_12: XSUQ4SSZWT6U · pith_short_16: XSUQ4SSZWT6UYEVM · pith_short_8: XSUQ4SSZ

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/XSUQ4SSZWT6UYEVM22UYYBCZZ4 \
  | 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: bca90e4a59b4fd4c12acd6a98c0459cf3cd55c8be726ed119cbe6f0085ddf04b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "616746aaa76c8c68bb365c2134f4d7ba1fe06fe12f080b052a3740ef1b0c3fe6",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "",
    "primary_cat": "cs.IT",
    "submitted_at": "2007-10-05T10:47:52Z",
    "title_canon_sha256": "453b1713a58f054822f8c26bf5b3c45cefb9849eade7ee2c5beb17f8ac40a504"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0710.1182",
    "kind": "arxiv",
    "version": 1
  }
}