Pith Number

pith:PL36HHZO

pith:2022:PL36HHZOPFA6Z2473SODHH3FRA

not attested not anchored not stored refs pending

Fast algorithms for least square problems with Kronecker lower subsets

Akil Narayan, Alireza Doostan, Nuojin Cheng, Osman Asif Malik, Stephen Becker, Yiming Xu

arxiv:2209.05662 v2 · 2022-09-13 · math.NA · cs.DS · 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{PL36HHZOPFA6Z2473SODHH3FRA}

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	2026-07-05T10:54:09.815754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7af7e39f2e7941eceb9fdc9c339f65882866cd507b155a8fe76fb71c3f04e999

Aliases

arxiv: 2209.05662 · arxiv_version: 2209.05662v2 · doi: 10.48550/arxiv.2209.05662 · pith_short_12: PL36HHZOPFA6 · pith_short_16: PL36HHZOPFA6Z247 · pith_short_8: PL36HHZO

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/PL36HHZOPFA6Z2473SODHH3FRA \
  | 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: 7af7e39f2e7941eceb9fdc9c339f65882866cd507b155a8fe76fb71c3f04e999

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f136e91390abae9dfcd48f76e1e27c773404ded0a9227bc6089f1d8bda2018a8",
    "cross_cats_sorted": [
      "cs.DS",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2022-09-13T00:35:54Z",
    "title_canon_sha256": "9d529b375062a75ba1449574048f081ab99a26a5946fe74f8397bc200dc970e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.05662",
    "kind": "arxiv",
    "version": 2
  }
}