Pith Number

pith:CF7KSC2W

pith:2012:CF7KSC2WXDY6GPJE25J323YVAU

not attested not anchored not stored refs pending

Perturbation of the Eigenvectors of the Graph Laplacian: Application to Image Denoising

Francois G. Meyer, Xilin Shen

arxiv:1202.6666 v1 · 2012-02-29 · physics.data-an · cs.CV · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CF7KSC2WXDY6GPJE25J323YVAU}

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	2026-05-18T04:01:11.944868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

117ea90b56b8f1e33d24d753bd6f1505289c706bb21371545741081aedf79bce

Aliases

arxiv: 1202.6666 · arxiv_version: 1202.6666v1 · doi: 10.48550/arxiv.1202.6666 · pith_short_12: CF7KSC2WXDY6 · pith_short_16: CF7KSC2WXDY6GPJE · pith_short_8: CF7KSC2W

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/CF7KSC2WXDY6GPJE25J323YVAU \
  | 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: 117ea90b56b8f1e33d24d753bd6f1505289c706bb21371545741081aedf79bce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3292b222f0e452904056dcdaf7f8d5ee275becdc48b49d5d0564e11e100432b6",
    "cross_cats_sorted": [
      "cs.CV",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2012-02-29T19:59:53Z",
    "title_canon_sha256": "92a2a2b5587dbfbfe3e0259fd664284af2103f4be5b96150e7d95475ad8fbe15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.6666",
    "kind": "arxiv",
    "version": 1
  }
}