Pith Number

pith:PWLPQCEU

pith:2012:PWLPQCEUUWSSBHVLM2LEDVXG2E

not attested not anchored not stored refs pending

A Novel Construction of Multi-group Decodable Space-Time Block Codes

Amr Ismail, Hikmet Sari, Jocelyn Fiorina

arxiv:1204.3388 v1 · 2012-04-16 · 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{PWLPQCEUUWSSBHVLM2LEDVXG2E}

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	2026-05-18T00:58:18.303243Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d96f80894a5a5209eab669641d6e6d101fefa7590debef03332aa81758bcd12

Aliases

arxiv: 1204.3388 · arxiv_version: 1204.3388v1 · doi: 10.48550/arxiv.1204.3388 · pith_short_12: PWLPQCEUUWSS · pith_short_16: PWLPQCEUUWSSBHVL · pith_short_8: PWLPQCEU

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/PWLPQCEUUWSSBHVLM2LEDVXG2E \
  | 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: 7d96f80894a5a5209eab669641d6e6d101fefa7590debef03332aa81758bcd12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef51ddbc17333d3ac298fc1f969c558707677d1142404ca002f09bbdfb4aa071",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-04-16T07:45:53Z",
    "title_canon_sha256": "43c058d848627a81087dcb636de5ae2d60c261a871467fce436b0cb8a40588ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.3388",
    "kind": "arxiv",
    "version": 1
  }
}