Pith Number

pith:4IJT3DXR

pith:2017:4IJT3DXRBJZDF657EUZBBHVD7M

not attested not anchored not stored refs pending

The Convergence of Least-Squares Progressive Iterative Approximation with Singular Iterative Matrix

Hongwei Lin, Qi Cao, Xiaoting Zhang

arxiv:1707.09109 v1 · 2017-07-28 · 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{4IJT3DXRBJZDF657EUZBBHVD7M}

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	2026-05-18T00:39:17.067682Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2133d8ef10a7232fbbf2532109ea3fb0800c036faf41f48883b1392d1439622

Aliases

arxiv: 1707.09109 · arxiv_version: 1707.09109v1 · doi: 10.48550/arxiv.1707.09109 · pith_short_12: 4IJT3DXRBJZD · pith_short_16: 4IJT3DXRBJZDF657 · pith_short_8: 4IJT3DXR

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/4IJT3DXRBJZDF657EUZBBHVD7M \
  | 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: e2133d8ef10a7232fbbf2532109ea3fb0800c036faf41f48883b1392d1439622

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50e55041be2aa59104485f64fbe82acb2fa829c299d4b93cf6426497b0a2e22e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2017-07-28T05:43:23Z",
    "title_canon_sha256": "939ebef09b5c1d1be8d456a1eabe0c777d7020d171189c0f8f13960aec671bc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.09109",
    "kind": "arxiv",
    "version": 1
  }
}