Pith Number

pith:LZW2JS7J

pith:2013:LZW2JS7JX2AKCKII2KNWHN2IJG

not attested not anchored not stored refs pending

On the minimum FLOPs problem in the sparse Cholesky factorization

Esmond Ng, Robert Luce

arxiv:1303.1754 v2 · 2013-03-07 · math.NA · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LZW2JS7JX2AKCKII2KNWHN2IJG}

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	2026-05-18T03:01:46.731350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e6da4cbe9be80a12908d29b63b74849a1264ae88c4b225a9070c597724c3439

Aliases

arxiv: 1303.1754 · arxiv_version: 1303.1754v2 · doi: 10.48550/arxiv.1303.1754 · pith_short_12: LZW2JS7JX2AK · pith_short_16: LZW2JS7JX2AKCKII · pith_short_8: LZW2JS7J

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/LZW2JS7JX2AKCKII2KNWHN2IJG \
  | 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: 5e6da4cbe9be80a12908d29b63b74849a1264ae88c4b225a9070c597724c3439

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41fae2eb7116ab85f17d6dc4726c52011492a8369befe28d7ead926d96523dae",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-03-07T17:17:47Z",
    "title_canon_sha256": "a304a91743e69f616d7db768be457ec191f9ed99238dfa156224a6b4e79901ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.1754",
    "kind": "arxiv",
    "version": 2
  }
}