Pith Number

pith:ELHGIMRY

pith:2011:ELHGIMRYUMRLCE4X6RXFG3RSHB

not attested not anchored not stored refs pending

Hierarchical QR factorization algorithms for multi-core cluster systems

and Yves Robert, Jack Dongarra, Julien Langou, Mathieu Faverge, Thomas Herault

arxiv:1110.1553 v1 · 2011-10-07 · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ELHGIMRYUMRLCE4X6RXFG3RSHB}

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	2026-05-18T03:47:53.680376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22ce643238a322b11397f46e536e32386f6cae38382d39696087082979aa9f01

Aliases

arxiv: 1110.1553 · arxiv_version: 1110.1553v1 · doi: 10.48550/arxiv.1110.1553 · pith_short_12: ELHGIMRYUMRL · pith_short_16: ELHGIMRYUMRLCE4X · pith_short_8: ELHGIMRY

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/ELHGIMRYUMRLCE4X6RXFG3RSHB \
  | 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: 22ce643238a322b11397f46e536e32386f6cae38382d39696087082979aa9f01

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75c94ae4623922c7ab1f7b9203fb3de1feaadc3c69341e6a156f35ee232a71e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2011-10-07T14:51:08Z",
    "title_canon_sha256": "12558cb022d84591abe255ddee0d9b9262a0e0c27d9f9ca31f545e50b59b4298"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.1553",
    "kind": "arxiv",
    "version": 1
  }
}