Pith Number

pith:LFX5HSVX

pith:2008:LFX5HSVXP3UDBYZTXUMJKFSS45

not attested not anchored not stored refs pending

Asymptotically Good LDPC Convolutional Codes Based on Protographs

Ali E. Pusane, Daniel J. Costello, David G. M. Mitchell, jr, Kamil Sh. Zigangirov

arxiv:0805.0241 v1 · 2008-05-02 · 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{LFX5HSVXP3UDBYZTXUMJKFSS45}

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	2026-05-18T00:59:11.798421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

596fd3cab77ee830e333bd18951652e75b59040a55557447293fc49443542161

Aliases

arxiv: 0805.0241 · arxiv_version: 0805.0241v1 · doi: 10.48550/arxiv.0805.0241 · pith_short_12: LFX5HSVXP3UD · pith_short_16: LFX5HSVXP3UDBYZT · pith_short_8: LFX5HSVX

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/LFX5HSVXP3UDBYZTXUMJKFSS45 \
  | 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: 596fd3cab77ee830e333bd18951652e75b59040a55557447293fc49443542161

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50f27b1907a3acbf627f0707555ef5d1cb9e15cf7db6f28247a4b9dd4552bd9c",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2008-05-02T16:13:16Z",
    "title_canon_sha256": "330222807843728a75f96d5071707294f7bd2d01387e2abac62b8b2dec46a9da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.0241",
    "kind": "arxiv",
    "version": 1
  }
}