Pith Number

pith:UK6DZPBQ

pith:2019:UK6DZPBQXLZS6TP4RTWK4AXU7W

not attested not anchored not stored refs pending

Structured Channel Covariance Estimation from Limited Samples in Massive MIMO

Giuseppe Caire, Mahdi Barzegar Khalilsarai, Saeid Haghighatshoar, Tianyu Yang

arxiv:1910.14467 v1 · 2019-10-31 · cs.IT · eess.SP · 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{UK6DZPBQXLZS6TP4RTWK4AXU7W}

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	2026-07-05T00:16:10.803248Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2bc3cbc30baf32f4dfc8cecae02f4fda9e5fc752e5881724d1050a3545cb033

Aliases

arxiv: 1910.14467 · arxiv_version: 1910.14467v1 · doi: 10.48550/arxiv.1910.14467 · pith_short_12: UK6DZPBQXLZS · pith_short_16: UK6DZPBQXLZS6TP4 · pith_short_8: UK6DZPBQ

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/UK6DZPBQXLZS6TP4RTWK4AXU7W \
  | 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: a2bc3cbc30baf32f4dfc8cecae02f4fda9e5fc752e5881724d1050a3545cb033

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c70e04c3adec1e68fb4ed00ae72b00daedaaf2c758002922871f8e50ae69559",
    "cross_cats_sorted": [
      "eess.SP",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-10-31T13:49:30Z",
    "title_canon_sha256": "19a6d714d8bc3f8e8fc1a9d982f7087128edaf09e083050f25150dfeae2ecacf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.14467",
    "kind": "arxiv",
    "version": 1
  }
}