Pith Number

pith:IJSHGTAC

pith:2026:IJSHGTACK5IPNN5R6YATQKBXKO

not attested not anchored not stored refs pending

Iterated graph Laplacian for image restoration problems

Davide Bianchi, Florian Bossmann, Marco Donatelli, Pietro Maurino, Stefano Aleotti

arxiv:2607.17313 v1 · 2026-07-19 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IJSHGTACK5IPNN5R6YATQKBXKO}

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	2026-07-21T01:21:26.840095Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4264734c025750f6b7b1f6013828375383c27e9a4c8f5d36b4966d68176dce1d

Aliases

arxiv: 2607.17313 · arxiv_version: 2607.17313v1 · doi: 10.48550/arxiv.2607.17313 · pith_short_12: IJSHGTACK5IP · pith_short_16: IJSHGTACK5IPNN5R · pith_short_8: IJSHGTAC

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/IJSHGTACK5IPNN5R6YATQKBXKO \
  | 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: 4264734c025750f6b7b1f6013828375383c27e9a4c8f5d36b4966d68176dce1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "381265d03af6277da1f6bbf91abae29cc0dbb7d9ba2cbdbadd27849dd2bf71e9",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-07-19T15:59:30Z",
    "title_canon_sha256": "f36ba59a91bc837d71398d11fb780fb6f0603ef1ccf89c586ba2ad3fcd667797"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.17313",
    "kind": "arxiv",
    "version": 1
  }
}