Pith Number

pith:6WQ5UKYP

pith:2019:6WQ5UKYPFOF6ISUGGSQ6G7BER4

not attested not anchored not stored refs pending

Regularization of linear ill-posed problems involving multiplication operators

Bernd Hofmann, M. Thamban Nair, Peter Math\'e

arxiv:1908.05871 v1 · 2019-08-16 · math.ST · math.FA · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6WQ5UKYPFOF6ISUGGSQ6G7BER4}

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	2026-07-04T23:57:53.917863Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5a1da2b0f2b8be44a8634a1e37c248f2b992b7c4ab73a02d0a4d0739506480f

Aliases

arxiv: 1908.05871 · arxiv_version: 1908.05871v1 · doi: 10.48550/arxiv.1908.05871 · pith_short_12: 6WQ5UKYPFOF6 · pith_short_16: 6WQ5UKYPFOF6ISUG · pith_short_8: 6WQ5UKYP

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/6WQ5UKYPFOF6ISUGGSQ6G7BER4 \
  | 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: f5a1da2b0f2b8be44a8634a1e37c248f2b992b7c4ab73a02d0a4d0739506480f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf611298fccdc57890b9de1e8c02399a00931cfa3362c12f202e312d6f7e064d",
    "cross_cats_sorted": [
      "math.FA",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2019-08-16T07:12:36Z",
    "title_canon_sha256": "6c20de05d086ade964a893a0010eb35d71e366693eab45178cb8ba1f69e3eb89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05871",
    "kind": "arxiv",
    "version": 1
  }
}