Pith Number

pith:TTGMYKYW

pith:2010:TTGMYKYWOGYCN52T2PXUFULWIB

not attested not anchored not stored refs pending

LSMR: An iterative algorithm for sparse least-squares problems

David Fong, Michael Saunders

arxiv:1006.0758 v2 · 2010-06-04 · cs.MS · math.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{TTGMYKYWOGYCN52T2PXUFULWIB}

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	2026-05-18T04:03:57.076912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ccccc2b1671b026f753d3ef42d1764077458cc9a3ed502399a5fa34bff45165

Aliases

arxiv: 1006.0758 · arxiv_version: 1006.0758v2 · doi: 10.48550/arxiv.1006.0758 · pith_short_12: TTGMYKYWOGYC · pith_short_16: TTGMYKYWOGYCN52T · pith_short_8: TTGMYKYW

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/TTGMYKYWOGYCN52T2PXUFULWIB \
  | 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: 9ccccc2b1671b026f753d3ef42d1764077458cc9a3ed502399a5fa34bff45165

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec5ab98761b7ad20534f2785bcaf9fe55ffb4cfe46887d4198eb70dfe2f97645",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2010-06-04T00:16:09Z",
    "title_canon_sha256": "5fcb1af3ba5332575a93306642999d1daf23c859c5e32db7f15633d7d1976291"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1006.0758",
    "kind": "arxiv",
    "version": 2
  }
}