Pith Number

pith:YGRLPKEW

pith:2018:YGRLPKEW6CUAPOHUPDNZAWRUS7

not attested not anchored not stored refs pending

Multigrid Algorithm Based on Hybrid Smoothers for Variational and Selective Segmentation Models

Ke Chen, Klaus L. Irion, Michael Roberts

arxiv:1807.02137 v2 · 2018-07-05 · 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{YGRLPKEW6CUAPOHUPDNZAWRUS7}

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	2026-05-17T23:41:25.066162Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1a2b7a896f0a807b8f478db905a3497c6a85605b92823874c48db17acc912b9

Aliases

arxiv: 1807.02137 · arxiv_version: 1807.02137v2 · doi: 10.48550/arxiv.1807.02137 · pith_short_12: YGRLPKEW6CUA · pith_short_16: YGRLPKEW6CUAPOHU · pith_short_8: YGRLPKEW

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/YGRLPKEW6CUAPOHUPDNZAWRUS7 \
  | 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: c1a2b7a896f0a807b8f478db905a3497c6a85605b92823874c48db17acc912b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "482cc1e4dd8efb543d6cc91fa27dfcd3965ee4d40d4f03f5177b8dcd8919cfa7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-07-05T18:31:15Z",
    "title_canon_sha256": "22ae3790373cdfad31c92bc0d42a653fcc743f5e0815d9ec81f63bff357b3753"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.02137",
    "kind": "arxiv",
    "version": 2
  }
}