Pith Number

pith:PQTC772G

pith:2019:PQTC772G4GCNBI7VIGY4NW2E6R

not attested not anchored not stored refs pending

Analysis on the Empirical Spectral Distribution of Large Sample Covariance Matrix and Applications for Large Antenna Array Processing

Guanping Lu, Jinsong Wu, Robert C. Qiu

arxiv:1903.03241 v1 · 2019-03-08 · 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{PQTC772G4GCNBI7VIGY4NW2E6R}

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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	2026-05-17T23:51:46.087131Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c262fff46e184d0a3f541b1c6db44f465a09d9524099ce3fce8747ef6d9bff4

Aliases

arxiv: 1903.03241 · arxiv_version: 1903.03241v1 · doi: 10.48550/arxiv.1903.03241 · pith_short_12: PQTC772G4GCN · pith_short_16: PQTC772G4GCNBI7V · pith_short_8: PQTC772G

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/PQTC772G4GCNBI7VIGY4NW2E6R \
  | 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: 7c262fff46e184d0a3f541b1c6db44f465a09d9524099ce3fce8747ef6d9bff4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "429d9448cc31a74f655df07a599b0d396250348b30b098caf640d02c20e9b6e9",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-03-08T01:41:03Z",
    "title_canon_sha256": "73b6282a12120496880a661ad076b9c8f5a48ec75162ae7ac3db7aced676bd19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03241",
    "kind": "arxiv",
    "version": 1
  }
}