Pith Number

pith:BA4PVKIG

pith:2012:BA4PVKIG2PPYXYF73BORY6XBH7

not attested not anchored not stored refs pending

Dissecting the FEAST algorithm for generalized eigenproblems

Bruno Lang, Edoardo Di Napoli, Lukas Kr\"amer, Martin Galgon, Paolo Bientinesi

arxiv:1204.1726 v1 · 2012-04-08 · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BA4PVKIG2PPYXYF73BORY6XBH7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:58:23.283916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0838faa906d3df8be0bfd85d1c7ae13ff3cadf2320861d6a39b28f3b51eae8c5

Aliases

arxiv: 1204.1726 · arxiv_version: 1204.1726v1 · doi: 10.48550/arxiv.1204.1726 · pith_short_12: BA4PVKIG2PPY · pith_short_16: BA4PVKIG2PPYXYF7 · pith_short_8: BA4PVKIG

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/BA4PVKIG2PPYXYF73BORY6XBH7 \
  | 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: 0838faa906d3df8be0bfd85d1c7ae13ff3cadf2320861d6a39b28f3b51eae8c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4f5def83e7beebc9262e1b5e7f5af63ec51ac1e8faf8b97b53b74eb55594df7",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2012-04-08T10:32:18Z",
    "title_canon_sha256": "b0783730733e04b6bee2cdb81e23105c60a0362cd9543c9c9de60cb22c90f833"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1726",
    "kind": "arxiv",
    "version": 1
  }
}