Pith Number

pith:MPU5DLOU

pith:2009:MPU5DLOUQNM7T52LGMHMZX6DJS

not attested not anchored not stored refs pending

Instanton-based Techniques for Analysis and Reduction of Error Floors of LDPC Codes

Bane Vasic, Michael Chertkov, Mikhail G. Stepanov, Shashi Kiran Chilappagari

arxiv:0903.1624 v1 · 2009-03-09 · 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{MPU5DLOUQNM7T52LGMHMZX6DJS}

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	2026-05-18T00:58:20.307915Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63e9d1add48359f9f74b330eccdfc34c9f8d2a249a8552601aec9753bb6ded49

Aliases

arxiv: 0903.1624 · arxiv_version: 0903.1624v1 · doi: 10.48550/arxiv.0903.1624 · pith_short_12: MPU5DLOUQNM7 · pith_short_16: MPU5DLOUQNM7T52L · pith_short_8: MPU5DLOU

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/MPU5DLOUQNM7T52LGMHMZX6DJS \
  | 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: 63e9d1add48359f9f74b330eccdfc34c9f8d2a249a8552601aec9753bb6ded49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf4cb1d12e6ef0502bdb5675384137df8139b460de0a7247fde45837851fda7e",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-03-09T19:05:13Z",
    "title_canon_sha256": "68cb3b0f51f9a6e1969abf6b7f894dfe7a1dc10d281307243ec0c4cb0db0e3bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.1624",
    "kind": "arxiv",
    "version": 1
  }
}