Pith Number

pith:GUUIVCCJ

pith:2012:GUUIVCCJ6O7S6YLDIAGWRHNYLL

not attested not anchored not stored refs pending

LU factorization with panel rank revealing pivoting and its communication avoiding version

Amal Khabou (LRI), James W. Demmel (UC Berkeley), Laura Grigori (INRIA Saclay - Ile de France), Ming Gu (UC Berkeley)

arxiv:1208.2451 v1 · 2012-08-12 · 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{GUUIVCCJ6O7S6YLDIAGWRHNYLL}

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	2026-05-18T03:48:57.850620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35288a8849f3bf2f6163400d689db85ae979ce13263aee8f529c1e226612e84a

Aliases

arxiv: 1208.2451 · arxiv_version: 1208.2451v1 · doi: 10.48550/arxiv.1208.2451 · pith_short_12: GUUIVCCJ6O7S · pith_short_16: GUUIVCCJ6O7S6YLD · pith_short_8: GUUIVCCJ

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/GUUIVCCJ6O7S6YLDIAGWRHNYLL \
  | 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: 35288a8849f3bf2f6163400d689db85ae979ce13263aee8f529c1e226612e84a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cca835f3f3f8e5df1fee396b30f9c5bc9faa91f7b39bd12869ce049c6222616",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2012-08-12T19:19:23Z",
    "title_canon_sha256": "84550d9088a5cc8cc02ef65b781527786aa1d02c85efa49d4ff4f04e30efa645"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.2451",
    "kind": "arxiv",
    "version": 1
  }
}