Pith Number

pith:NA7CONSS

pith:2019:NA7CONSS57P5ZDPRJ4GIYGHKTX

not attested not anchored not stored refs pending

New numerical algorithm for deflation of infinite and zero eigenvalues and full solution of quadratic eigenvalue problems

Ivana \v{S}ain Glibi\'c, Zlatko Drma\v{c}

arxiv:1904.05418 v1 · 2019-04-10 · math.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{NA7CONSS57P5ZDPRJ4GIYGHKTX}

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	2026-05-17T23:48:49.583880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

683e273652efdfdc8df14f0c8c18ea9de22bef799c4a33c50bb1fe09ddca8488

Aliases

arxiv: 1904.05418 · arxiv_version: 1904.05418v1 · doi: 10.48550/arxiv.1904.05418 · pith_short_12: NA7CONSS57P5 · pith_short_16: NA7CONSS57P5ZDPR · pith_short_8: NA7CONSS

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/NA7CONSS57P5ZDPRJ4GIYGHKTX \
  | 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: 683e273652efdfdc8df14f0c8c18ea9de22bef799c4a33c50bb1fe09ddca8488

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ee65ea7c5483163c46054d757a0c43df1539f99dcbc9ea2d01381a3ab9ab935",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-04-10T20:02:28Z",
    "title_canon_sha256": "afd5165e8c17b6ee741eb48f721327991b8512564c4674829ea246df208999ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.05418",
    "kind": "arxiv",
    "version": 1
  }
}