Pith Number

pith:JZ6OEXG7

pith:2019:JZ6OEXG7GEK2W64LR5NPN4KQTZ

not attested not anchored not stored refs pending

Local Linearizations of Rational Matrices with Application to Rational Approximations of Nonlinear Eigenvalue Problems

Froil\'an M. Dopico, Mar\'ia C. Quintana, Paul Van Dooren, Silvia Marcaida

arxiv:1907.10972 v1 · 2019-07-25 · math.NA · 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{JZ6OEXG7GEK2W64LR5NPN4KQTZ}

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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	2026-05-17T23:39:33.849660Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e7ce25cdf3115ab7b8b8f5af6f1509e7d49e2d4c4a78b6953081e97d0160b9d

Aliases

arxiv: 1907.10972 · arxiv_version: 1907.10972v1 · doi: 10.48550/arxiv.1907.10972 · pith_short_12: JZ6OEXG7GEK2 · pith_short_16: JZ6OEXG7GEK2W64L · pith_short_8: JZ6OEXG7

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/JZ6OEXG7GEK2W64LR5NPN4KQTZ \
  | 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: 4e7ce25cdf3115ab7b8b8f5af6f1509e7d49e2d4c4a78b6953081e97d0160b9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2382fad3ef777c6b055350bbcfc028c07f8d6ff4df70e58099abc4de8d55a692",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-07-25T11:21:01Z",
    "title_canon_sha256": "a223e762d23f3bbc39b06a590fb412f6d0743924c499092c6ecb0ba330d5929a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.10972",
    "kind": "arxiv",
    "version": 1
  }
}