Pith Number

pith:JRLNQZCZ

pith:2017:JRLNQZCZNKSRRIUM6P5BKTTGRY

not attested not anchored not stored refs pending

Covariance Matrix Estimation in Massive MIMO

David Neumann, Michael Joham, Wolfgang Utschick

arxiv:1705.02895 v2 · 2017-05-08 · 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{JRLNQZCZNKSRRIUM6P5BKTTGRY}

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	2026-05-18T00:15:22.104373Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c56d864596aa518a28cf3fa154e668e30f2201433951978a09f565d2734676f

Aliases

arxiv: 1705.02895 · arxiv_version: 1705.02895v2 · doi: 10.48550/arxiv.1705.02895 · pith_short_12: JRLNQZCZNKSR · pith_short_16: JRLNQZCZNKSRRIUM · pith_short_8: JRLNQZCZ

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/JRLNQZCZNKSRRIUM6P5BKTTGRY \
  | 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: 4c56d864596aa518a28cf3fa154e668e30f2201433951978a09f565d2734676f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38e91fa38c4938475fb1285740c5fa5130d4e818ffe0b5769429f595f57500d7",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-05-08T14:33:13Z",
    "title_canon_sha256": "7ab4feda21187d0413006c20c8638f329b8312e843f3ef783275fbc40cef023e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.02895",
    "kind": "arxiv",
    "version": 2
  }
}