Pith Number

pith:A4Q4AV7O

pith:2012:A4Q4AV7OZNZSQVL7QWJGKY7U4K

not attested not anchored not stored refs pending

High-Performance Solvers for Dense Hermitian Eigenproblems

Elmar Peise (1), Matthias Petschow (1), Paolo Bientinesi (1) ((1) AICES, RWTH Aachen)

arxiv:1205.2107 v2 · 2012-05-09 · cs.MS · 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{A4Q4AV7OZNZSQVL7QWJGKY7U4K}

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	2026-05-18T03:44:47.082382Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0721c057eecb7328557f85926563f4e29a98331fd64cd6e203e2a164eee7a780

Aliases

arxiv: 1205.2107 · arxiv_version: 1205.2107v2 · doi: 10.48550/arxiv.1205.2107 · pith_short_12: A4Q4AV7OZNZS · pith_short_16: A4Q4AV7OZNZSQVL7 · pith_short_8: A4Q4AV7O

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/A4Q4AV7OZNZSQVL7QWJGKY7U4K \
  | 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: 0721c057eecb7328557f85926563f4e29a98331fd64cd6e203e2a164eee7a780

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a88a8ddab36bf908caf6293100bec00336d7fcfcd96db48d82b0f5bf374eb08",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2012-05-09T21:20:55Z",
    "title_canon_sha256": "31ca2d22c0499f5c9813d69a52041ee3c269cc98597b5d3f2970594362895bd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.2107",
    "kind": "arxiv",
    "version": 2
  }
}