Pith Number

pith:4GVTUP7M

pith:2009:4GVTUP7MTYXWO2CIHFG52Y3E7N

not attested not anchored not stored refs pending

Turbo Packet Combining for Broadband Space-Time BICM Hybrid-ARQ Systems with Co-Channel Interference

Houda Chafnaji, Samir Saoudi, Tarik Ait-Idir

arxiv:0904.1712 v2 · 2009-04-10 · 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{4GVTUP7MTYXWO2CIHFG52Y3E7N}

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	2026-05-18T02:24:56.039598Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1ab3a3fec9e2f676848394ddd6364fb4d645c2415118bd94d03fdbe391a7ea8

Aliases

arxiv: 0904.1712 · arxiv_version: 0904.1712v2 · doi: 10.48550/arxiv.0904.1712 · pith_short_12: 4GVTUP7MTYXW · pith_short_16: 4GVTUP7MTYXWO2CI · pith_short_8: 4GVTUP7M

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/4GVTUP7MTYXWO2CIHFG52Y3E7N \
  | 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: e1ab3a3fec9e2f676848394ddd6364fb4d645c2415118bd94d03fdbe391a7ea8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a92f0581e415b98d25c7da80ec510d09aa3f1668672378166667ac0f0991603",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-04-10T17:05:49Z",
    "title_canon_sha256": "c0a5e57c450d146d54e5301f35435362dcf11a8b0e2d7c0d7d734295a336c73d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1712",
    "kind": "arxiv",
    "version": 2
  }
}