Pith Number

pith:QREK4WZQ

pith:2012:QREK4WZQ2T5HOTJ2ESEOE437CR

not attested not anchored not stored refs pending

LLR Compression for BICM Systems Using Large Constellations

Bixio Rimoldi, Matteo Butussi, Stefano Rosati, Stefano Tomasin

arxiv:1210.5183 v2 · 2012-10-18 · 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{QREK4WZQ2T5HOTJ2ESEOE437CR}

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	2026-05-18T00:59:04.697306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8448ae5b30d4fa774d3a2488e2737f144e79b13e4b6fe79bc71d291e69fbc644

Aliases

arxiv: 1210.5183 · arxiv_version: 1210.5183v2 · doi: 10.48550/arxiv.1210.5183 · pith_short_12: QREK4WZQ2T5H · pith_short_16: QREK4WZQ2T5HOTJ2 · pith_short_8: QREK4WZQ

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/QREK4WZQ2T5HOTJ2ESEOE437CR \
  | 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: 8448ae5b30d4fa774d3a2488e2737f144e79b13e4b6fe79bc71d291e69fbc644

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "460b1ff91929be467b40a54b0be44b39351d9c875b2bda5d7038057e55a7f649",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-10-18T16:46:52Z",
    "title_canon_sha256": "65f20507809f9f635b14bd6e26aae175d3bb398d2aa247981ff1c931c48b926b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.5183",
    "kind": "arxiv",
    "version": 2
  }
}