Pith Number

pith:NEFMG2OA

pith:2019:NEFMG2OAMAM63LS4C2ZEUIMLUQ

not attested not anchored not stored refs pending

A Randomized Algorithm for Preconditioner Selection

Conner DiPaolo, Weiqing Gu

arxiv:1908.00633 v1 · 2019-08-01 · math.NA · cs.DS · cs.NA · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NEFMG2OAMAM63LS4C2ZEUIMLUQ}

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	2026-07-05T09:09:46.146675Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

690ac369c06019edae5c16b24a218ba40f145074bb875269f17ca72da7311b2e

Aliases

arxiv: 1908.00633 · arxiv_version: 1908.00633v1 · doi: 10.48550/arxiv.1908.00633 · pith_short_12: NEFMG2OAMAM6 · pith_short_16: NEFMG2OAMAM63LS4 · pith_short_8: NEFMG2OA

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/NEFMG2OAMAM63LS4C2ZEUIMLUQ \
  | 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: 690ac369c06019edae5c16b24a218ba40f145074bb875269f17ca72da7311b2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d6664e50e33632f83fbb908443e1a60f2cd16532b2e7c49c632a1ef32840540",
    "cross_cats_sorted": [
      "cs.DS",
      "cs.NA",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-08-01T21:11:30Z",
    "title_canon_sha256": "826efad4847448d1ac4131ed347deca488e2764e74ebc3618915757f26290832"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.00633",
    "kind": "arxiv",
    "version": 1
  }
}