Pith Number

pith:CDI33WFQ

pith:2019:CDI33WFQZPVXALKHLDAVN5IA23

not attested not anchored not stored refs pending

Case studies and a pitfall for nonlinear variational regularization under conditional stability

Bernd Hofmann, Christopher Hofmann, Daniel Gerth

arxiv:1905.11682 v1 · 2019-05-28 · math.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{CDI33WFQZPVXALKHLDAVN5IA23}

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	2026-05-17T23:44:52.668342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10d1bdd8b0cbeb702d4758c156f500d6ed474fe6208ca2de1f72e60583e8862f

Aliases

arxiv: 1905.11682 · arxiv_version: 1905.11682v1 · doi: 10.48550/arxiv.1905.11682 · pith_short_12: CDI33WFQZPVX · pith_short_16: CDI33WFQZPVXALKH · pith_short_8: CDI33WFQ

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/CDI33WFQZPVXALKHLDAVN5IA23 \
  | 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: 10d1bdd8b0cbeb702d4758c156f500d6ed474fe6208ca2de1f72e60583e8862f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05e1f0ecd0ebc6412045db179fa17413071b048ef7710b5ac72b6429af679f9f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-05-28T08:43:33Z",
    "title_canon_sha256": "e9fbf5196858c77401f7f852bb19bd43e735b515daff30d92cce5df282dfa775"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.11682",
    "kind": "arxiv",
    "version": 1
  }
}