Pith Number

pith:47OVQ3ZQ

pith:2015:47OVQ3ZQTZHOMJX3VYHCANDNFI

not attested not anchored not stored refs pending

Automated Parameter Selection for Total Variation Minimization in Image Restoration

Andreas Langer

arxiv:1509.07442 v4 · 2015-09-24 · math.NA · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{47OVQ3ZQTZHOMJX3VYHCANDNFI}

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	2026-05-18T00:53:45.540424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7dd586f309e4ee626fbae0e20346d2a1f628ce018f4c85f28c6164aa6fb878e

Aliases

arxiv: 1509.07442 · arxiv_version: 1509.07442v4 · doi: 10.48550/arxiv.1509.07442 · pith_short_12: 47OVQ3ZQTZHO · pith_short_16: 47OVQ3ZQTZHOMJX3 · pith_short_8: 47OVQ3ZQ

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/47OVQ3ZQTZHOMJX3VYHCANDNFI \
  | 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: e7dd586f309e4ee626fbae0e20346d2a1f628ce018f4c85f28c6164aa6fb878e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac2fe9cdd6ca8504698a77432b16df4e5c4415b42df5afe95c956d35f3b84c35",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-09-24T17:17:54Z",
    "title_canon_sha256": "c00af624ee56042d5bdad8fd332dbdf2e0cf7e740b17c6d5d578b175086ed64f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.07442",
    "kind": "arxiv",
    "version": 4
  }
}