Pith Number

pith:D7BG5XD4

pith:2012:D7BG5XD4VW373XA55TDFUZP4CC

not attested not anchored not stored refs pending

Locating the eigenvalues of matrix polynomials

Dario A. Bini, Meisam Sharify, Vanni Noferini

arxiv:1206.3632 v2 · 2012-06-16 · 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{D7BG5XD4VW373XA55TDFUZP4CC}

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	2026-05-18T03:49:34.618291Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fc26edc7cadb7fddc1decc65a65fc108c763c4e1ad33f6b63f041a991e136f1

Aliases

arxiv: 1206.3632 · arxiv_version: 1206.3632v2 · doi: 10.48550/arxiv.1206.3632 · pith_short_12: D7BG5XD4VW37 · pith_short_16: D7BG5XD4VW373XA5 · pith_short_8: D7BG5XD4

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/D7BG5XD4VW373XA55TDFUZP4CC \
  | 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: 1fc26edc7cadb7fddc1decc65a65fc108c763c4e1ad33f6b63f041a991e136f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a19354e1b3c3818ac0cbd32ed43e41b03888f5eb0788a02a542fad1cbd49d98",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-06-16T06:17:32Z",
    "title_canon_sha256": "cea6c51b748709923ec0e2b7c9365da1cdb978bd798edc44edd69b8b9e080861"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.3632",
    "kind": "arxiv",
    "version": 2
  }
}