Pith Number

pith:6WEPGC75

pith:2018:6WEPGC75E37PA2FX2FCQOQPGNN

not attested not anchored not stored refs pending

A Joint Bidiagonalization Based Algorithm for Large Scale Linear Discrete Ill-posed Problems in General-Form Regularization

Yanfei Yang, Zhongxiao Jia

arxiv:1807.08419 v2 · 2018-07-23 · 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{6WEPGC75E37PA2FX2FCQOQPGNN}

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	2026-06-04T19:12:08.760070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f588f30bfd26fef068b7d1450741e66b59d51b0f01a800c64485d180a27e630f

Aliases

arxiv: 1807.08419 · arxiv_version: 1807.08419v2 · doi: 10.48550/arxiv.1807.08419 · pith_short_12: 6WEPGC75E37P · pith_short_16: 6WEPGC75E37PA2FX · pith_short_8: 6WEPGC75

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/6WEPGC75E37PA2FX2FCQOQPGNN \
  | 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: f588f30bfd26fef068b7d1450741e66b59d51b0f01a800c64485d180a27e630f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d39f597bdb896e37541d31d0778060a53e8fc2c8addcc5fb12b3f0fd2f5b6553",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-07-23T03:41:44Z",
    "title_canon_sha256": "e40d1c842c964bd0f678c47640bb9bb00ba30d3e06cc0cf2d5d706dc74aa7773"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.08419",
    "kind": "arxiv",
    "version": 2
  }
}