Pith Number

pith:W2LAJHQU

pith:2018:W2LAJHQUKOWBDVLGEZJYTSYP6N

not attested not anchored not stored refs pending

Simple, Fast and Practicable Algorithms for Cholesky, LU and QR Decomposition Using Fast Rectangular Matrix Multiplication

Crist\'obal Camarero

arxiv:1812.02056 v1 · 2018-12-05 · cs.NA · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W2LAJHQUKOWBDVLGEZJYTSYP6N}

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	2026-05-17T23:58:59.834837Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b696049e1453ac11d566265389cb0ff371028ec3cdc2213bc7a7084386065804

Aliases

arxiv: 1812.02056 · arxiv_version: 1812.02056v1 · doi: 10.48550/arxiv.1812.02056 · pith_short_12: W2LAJHQUKOWB · pith_short_16: W2LAJHQUKOWBDVLG · pith_short_8: W2LAJHQU

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/W2LAJHQUKOWBDVLGEZJYTSYP6N \
  | 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: b696049e1453ac11d566265389cb0ff371028ec3cdc2213bc7a7084386065804

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9da182a39aa60721a6e998cd2d959a512c2166f8ce0c1abba09cd9dfaa9d38ef",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2018-12-05T15:46:21Z",
    "title_canon_sha256": "18f9e27825c96d71de457b72cd77d440a0d0000e91bfd1bbb4445bc205a5421a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.02056",
    "kind": "arxiv",
    "version": 1
  }
}