Pith Number

pith:OTI7CMGZ

pith:2018:OTI7CMGZJPFZ422ZQUCORPWRRO

not attested not anchored not stored refs pending

Penalty-based smoothness conditions in convex variational regularization

Bernd Hofmann, Peter Math\'e, Stefan Kindermann

arxiv:1805.01320 v1 · 2018-05-03 · 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{OTI7CMGZJPFZ422ZQUCORPWRRO}

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	2026-06-04T19:11:51.444980Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74d1f130d94bcb9e6b598504e8bed18b86625d2863d14b1fdf216621b0a870ab

Aliases

arxiv: 1805.01320 · arxiv_version: 1805.01320v1 · doi: 10.48550/arxiv.1805.01320 · pith_short_12: OTI7CMGZJPFZ · pith_short_16: OTI7CMGZJPFZ422Z · pith_short_8: OTI7CMGZ

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/OTI7CMGZJPFZ422ZQUCORPWRRO \
  | 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: 74d1f130d94bcb9e6b598504e8bed18b86625d2863d14b1fdf216621b0a870ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92fb275a01e71cd809d017e252ca2b7dc3ffded3e1804f5bbf4d278c375f7f6a",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-05-03T14:18:42Z",
    "title_canon_sha256": "f1e78fd1e8013235e4d5a0b0aa0807016509a7ea20dbf81391f95c2dd13133d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.01320",
    "kind": "arxiv",
    "version": 1
  }
}