Pith Number

pith:S4W4EWK4

pith:2017:S4W4EWK4CQTNJ3X6JQH5MKSKFV

not attested not anchored not stored refs pending

Fast Maximum-Likelihood Decoder for 4*4 Quasi-Orthogonal Space-Time Block Code

Adel Ahmadi, Siamak Talebi

arxiv:1706.03833 v1 · 2017-06-12 · 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{S4W4EWK4CQTNJ3X6JQH5MKSKFV}

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	2026-05-18T00:42:28.252952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

972dc2595c1426d4eefe4c0fd62a4a2d41a31cafcf6320d88eac5bf803c5e1d8

Aliases

arxiv: 1706.03833 · arxiv_version: 1706.03833v1 · doi: 10.48550/arxiv.1706.03833 · pith_short_12: S4W4EWK4CQTN · pith_short_16: S4W4EWK4CQTNJ3X6 · pith_short_8: S4W4EWK4

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/S4W4EWK4CQTNJ3X6JQH5MKSKFV \
  | 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: 972dc2595c1426d4eefe4c0fd62a4a2d41a31cafcf6320d88eac5bf803c5e1d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "362aef81502395f0e5c7f79d15238679212886a2e6bbd8542d9575bb064bfc7c",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-06-12T20:08:56Z",
    "title_canon_sha256": "8e3a3d3721181b1e78eb94526c5582a192c608bc32b2a248c29274e499c43778"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.03833",
    "kind": "arxiv",
    "version": 1
  }
}