Pith Number

pith:CPTW57IB

pith:2018:CPTW57IB4GCID76A34BH5NLRSI

not attested not anchored not stored refs pending

FastFCA-AS: Joint Diagonalization Based Acceleration of Full-Rank Spatial Covariance Analysis for Separating Any Number of Sources

Nobutaka Ito, Tomohiro Nakatani

arxiv:1805.09498 v1 · 2018-05-24 · cs.SD · eess.AS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CPTW57IB4GCID76A34BH5NLRSI}

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	2026-05-18T00:15:03.757268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13e76efd01e18481ffc0df027eb571920e19746e2138b418e91e1e5937d5e1ec

Aliases

arxiv: 1805.09498 · arxiv_version: 1805.09498v1 · doi: 10.48550/arxiv.1805.09498 · pith_short_12: CPTW57IB4GCI · pith_short_16: CPTW57IB4GCID76A · pith_short_8: CPTW57IB

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/CPTW57IB4GCID76A34BH5NLRSI \
  | 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: 13e76efd01e18481ffc0df027eb571920e19746e2138b418e91e1e5937d5e1ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9b87a4ef8de1a177603b473955a88f0eb93452f67308821a41dbfe0f21eb2b2",
    "cross_cats_sorted": [
      "eess.AS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SD",
    "submitted_at": "2018-05-24T03:46:20Z",
    "title_canon_sha256": "43ce847a20e25ac21aefaecd6d694dbf3361d06451f2d2ebfcfa7b54c003e3d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.09498",
    "kind": "arxiv",
    "version": 1
  }
}