Pith Number

pith:KHWB32WD

pith:2019:KHWB32WDBD7JB244WTKKUBPQ3X

not attested not anchored not stored refs pending

Channel Covariance Matrix Estimation via Dimension Reduction for Hybrid MIMO MmWave Communication Systems

Jiangtao Xi, Jun Tong, Qinghua Guo, Rui Hu, Yanguang Yu

arxiv:1905.03916 v2 · 2019-05-10 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KHWB32WDBD7JB244WTKKUBPQ3X}

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	2026-05-17T23:42:41.707973Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51ec1deac308fe90eb9cb4d4aa05f0ddc4ea166c66cc549c8771abc0d2996fc8

Aliases

arxiv: 1905.03916 · arxiv_version: 1905.03916v2 · doi: 10.48550/arxiv.1905.03916 · pith_short_12: KHWB32WDBD7J · pith_short_16: KHWB32WDBD7JB244 · pith_short_8: KHWB32WD

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/KHWB32WDBD7JB244WTKKUBPQ3X \
  | 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: 51ec1deac308fe90eb9cb4d4aa05f0ddc4ea166c66cc549c8771abc0d2996fc8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a716ce5a67b0b457c732b0dff7b624d018319c5dff717dafe34d9b65033aed79",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2019-05-10T02:54:04Z",
    "title_canon_sha256": "638b68cc13d89a9430d3e9a2c9cb093c4a538dd4df4de98c99127cf97eacf4aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.03916",
    "kind": "arxiv",
    "version": 2
  }
}