Pith Number

pith:URU5QQZN

pith:2011:URU5QQZNA6WGJVIPAI5CARIGES

not attested not anchored not stored refs pending

Rank-profile revealing Gaussian elimination and the CUP matrix decomposition

Arne Storjohann, Claude-Pierre Jeannerod, Cl\'ement Pernet

arxiv:1112.5717 v2 · 2011-12-24 · cs.MS · cs.SC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{URU5QQZNA6WGJVIPAI5CARIGES}

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	2026-05-18T04:05:03.260083Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a469d8432d07ac64d50f023a204506249f611eaa7af059d1a7604e853a5d8ae3

Aliases

arxiv: 1112.5717 · arxiv_version: 1112.5717v2 · doi: 10.48550/arxiv.1112.5717 · pith_short_12: URU5QQZNA6WG · pith_short_16: URU5QQZNA6WGJVIP · pith_short_8: URU5QQZN

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/URU5QQZNA6WGJVIPAI5CARIGES \
  | 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: a469d8432d07ac64d50f023a204506249f611eaa7af059d1a7604e853a5d8ae3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93bdcc99a14caa5c2279def0ef26801d4ad082d163f0f379d856a7ea397dec7d",
    "cross_cats_sorted": [
      "cs.SC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2011-12-24T11:30:09Z",
    "title_canon_sha256": "ab991570ba3d072850d6583e18d64002acaeb6d794ea0a5184244abad0c259eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.5717",
    "kind": "arxiv",
    "version": 2
  }
}