Pith Number

pith:C2PRNYFM

pith:2018:C2PRNYFMLIIOPWOEZ6VYILFQQR

not attested not anchored not stored refs pending

On The Block Decomposition and Spectral Factors of {\lambda}-Matrices

Abdelhakim Dahimene, Belkacem Bekhiti, George F. Fragulis, Kamel Hariche

arxiv:1803.10557 v1 · 2018-03-28 · 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{C2PRNYFMLIIOPWOEZ6VYILFQQR}

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	2026-05-18T00:19:54.924763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

169f16e0ac5a10e7d9c4cfab842cb08440b6ff40a152ee0e1c11e8a0fef96bc9

Aliases

arxiv: 1803.10557 · arxiv_version: 1803.10557v1 · doi: 10.48550/arxiv.1803.10557 · pith_short_12: C2PRNYFMLIIO · pith_short_16: C2PRNYFMLIIOPWOE · pith_short_8: C2PRNYFM

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/C2PRNYFMLIIOPWOEZ6VYILFQQR \
  | 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: 169f16e0ac5a10e7d9c4cfab842cb08440b6ff40a152ee0e1c11e8a0fef96bc9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "459ab53fcb99ed93c87778cf3eb62007f6657bf9e1a471eda6cbea35313d64d6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2018-03-28T12:29:04Z",
    "title_canon_sha256": "409c3b400acedf0aa36eb7d87ee6849a1c53d4f227b8da76e0171394a1a44a3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.10557",
    "kind": "arxiv",
    "version": 1
  }
}