Pith Number

pith:QYJTPCJH

pith:2012:QYJTPCJHOD7JS3KD7CK3OCHO4X

not attested not anchored not stored refs pending

Joint Compute and Forward for the Two Way Relay Channel with Spatially Coupled LDPC Codes

Brett Hern, Krishna Narayanan

arxiv:1205.5904 v1 · 2012-05-26 · cs.IT · math.IT

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QYJTPCJHOD7JS3KD7CK3OCHO4X}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:58:18.186902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

861337892770fe996d43f895b708eee5c769cb090b7bb6e6934b9e9667ad4596

Aliases

arxiv: 1205.5904 · arxiv_version: 1205.5904v1 · doi: 10.48550/arxiv.1205.5904 · pith_short_12: QYJTPCJHOD7J · pith_short_16: QYJTPCJHOD7JS3KD · pith_short_8: QYJTPCJH

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/QYJTPCJHOD7JS3KD7CK3OCHO4X \
  | 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: 861337892770fe996d43f895b708eee5c769cb090b7bb6e6934b9e9667ad4596

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1099b79593ebf7a56276ffefa438925bf03ecaab74ce8775aad5eda96c91eff5",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-05-26T18:28:27Z",
    "title_canon_sha256": "ee0688b7758f7a66edc12c807f196e99f74533e303872a73a814fee7f1e7e2a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.5904",
    "kind": "arxiv",
    "version": 1
  }
}