Pith Number

pith:FXUZ25CI

pith:2019:FXUZ25CIKIWMES3V3RIWVTZ2AR

not attested not anchored not stored refs pending

Discrete Total Variation of the Normal Vector Field as Shape Prior with Applications in Geometric Inverse Problems

Jos\'e Vidal N\'u\~nez, Marc Herrmann, Roland Herzog, Ronny Bergmann, Stephan Schmidt

arxiv:1908.07916 v1 · 2019-08-20 · 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{FXUZ25CIKIWMES3V3RIWVTZ2AR}

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	2026-07-05T01:12:22.562195Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2de99d7448522cc24b75dc516acf3a046ca672616dce5b251442f9ac822d1d7b

Aliases

arxiv: 1908.07916 · arxiv_version: 1908.07916v1 · doi: 10.48550/arxiv.1908.07916 · pith_short_12: FXUZ25CIKIWM · pith_short_16: FXUZ25CIKIWMES3V · pith_short_8: FXUZ25CI

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/FXUZ25CIKIWMES3V3RIWVTZ2AR \
  | 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: 2de99d7448522cc24b75dc516acf3a046ca672616dce5b251442f9ac822d1d7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "027d75e81051c74219ae7e1a29fb23e07433b043ed33c61f0671fa91793c3762",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-08-20T09:06:07Z",
    "title_canon_sha256": "ada6efa4f718a0dbd4502b38176f57552e9edf30b6f0f9d962ddb012166544b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.07916",
    "kind": "arxiv",
    "version": 1
  }
}