Pith Number

pith:A2C4S33C

pith:2011:A2C4S33CBCXC7VTFNA6R4Q3O6S

not attested not anchored not stored refs pending

Estimation of Sparse MIMO Channels with Common Support

Ali Hormati, Martin Vetterli, Sundeep Rangan, Yann Barbotin

arxiv:1107.1339 v1 · 2011-07-07 · cs.NI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A2C4S33CBCXC7VTFNA6R4Q3O6S}

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	2026-05-18T00:58:43.391917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0685c96f6208ae2fd665683d1e436ef4bb8e1cb9f9d89e5509cb31df45ad552e

Aliases

arxiv: 1107.1339 · arxiv_version: 1107.1339v1 · doi: 10.48550/arxiv.1107.1339 · pith_short_12: A2C4S33CBCXC · pith_short_16: A2C4S33CBCXC7VTF · pith_short_8: A2C4S33C

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/A2C4S33CBCXC7VTFNA6R4Q3O6S \
  | 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: 0685c96f6208ae2fd665683d1e436ef4bb8e1cb9f9d89e5509cb31df45ad552e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21d36ef62cb160c87a9aab3bdad6089ded1c38a3647a9afa93ae10d7b5acf7db",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2011-07-07T10:42:12Z",
    "title_canon_sha256": "7b4539eea580fe43123cc5f4300f52a4ad0ff76a685402d845a05f32a1764779"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.1339",
    "kind": "arxiv",
    "version": 1
  }
}