Pith Number

pith:OJPX6JOY

pith:2014:OJPX6JOYRJ2XF5XAATDLY4HSNE

not attested not anchored not stored refs pending

Conditioning of Leverage Scores and Computation by QR Decomposition

Ilse C. F. Ipsen, John T. Holodnak, Thomas A. Wentworth

arxiv:1402.0957 v4 · 2014-02-05 · 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{OJPX6JOYRJ2XF5XAATDLY4HSNE}

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	2026-05-18T02:03:48.546427Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

725f7f25d88a7572f6e004c6bc70f2692b7cdc97c354dd3bff00b1175b6ce443

Aliases

arxiv: 1402.0957 · arxiv_version: 1402.0957v4 · doi: 10.48550/arxiv.1402.0957 · pith_short_12: OJPX6JOYRJ2X · pith_short_16: OJPX6JOYRJ2XF5XA · pith_short_8: OJPX6JOY

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/OJPX6JOYRJ2XF5XAATDLY4HSNE \
  | 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: 725f7f25d88a7572f6e004c6bc70f2692b7cdc97c354dd3bff00b1175b6ce443

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7473959236ff5ec1c2429d2378b64fc4a276b9e5ab3a9954cab11c653340f7d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-02-05T07:30:10Z",
    "title_canon_sha256": "5340dd980d0eae42280264d3f51ca7f8cb7d967f0d0ad2c8b05f433cb5df099e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.0957",
    "kind": "arxiv",
    "version": 4
  }
}