Pith Number

pith:VB4BFH3A

pith:2011:VB4BFH3AIDY6I4XP3CBWWV7AVX

not attested not anchored not stored refs pending

Energy-Efficient Full Diversity Collaborative Unitary Space-Time Block Code Design via Unique Factorization of Signals

Dong Xia, Jian-Kang Zhang, Sorina Dumitrescu

arxiv:1109.4173 v1 · 2011-09-19 · 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{VB4BFH3AIDY6I4XP3CBWWV7AVX}

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	2026-05-18T04:12:44.062936Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a878129f6040f1e472efd8836b57e0ade3544f32c817c3accc9b02cd50407322

Aliases

arxiv: 1109.4173 · arxiv_version: 1109.4173v1 · doi: 10.48550/arxiv.1109.4173 · pith_short_12: VB4BFH3AIDY6 · pith_short_16: VB4BFH3AIDY6I4XP · pith_short_8: VB4BFH3A

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/VB4BFH3AIDY6I4XP3CBWWV7AVX \
  | 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: a878129f6040f1e472efd8836b57e0ade3544f32c817c3accc9b02cd50407322

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01781a5a0ff9ecf119a5ae4d88a15500d90608cdbcf13f02ed2a043d3dff2c1a",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-09-19T21:01:27Z",
    "title_canon_sha256": "5bf189acfdc53f08302b382ab7a901d58c97515d99c9367cdeb65a83b64e3a2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4173",
    "kind": "arxiv",
    "version": 1
  }
}