Pith Number

pith:TGZ4FCT4

pith:2018:TGZ4FCT4QCC4XSMH77BL7DL3S3

not attested not anchored not stored refs pending

Solving singular generalized eigenvalue problems by a rank-completing perturbation

Bor Plestenjak, Christian Mehl, Michiel E. Hochstenbach

arxiv:1805.07657 v2 · 2018-05-19 · 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{TGZ4FCT4QCC4XSMH77BL7DL3S3}

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	2026-06-04T19:11:54.388415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99b3c28a7c8085cbc987ffc2bf8d7b96cbf7259c78ae152d7b008a4e36f97a92

Aliases

arxiv: 1805.07657 · arxiv_version: 1805.07657v2 · doi: 10.48550/arxiv.1805.07657 · pith_short_12: TGZ4FCT4QCC4 · pith_short_16: TGZ4FCT4QCC4XSMH · pith_short_8: TGZ4FCT4

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/TGZ4FCT4QCC4XSMH77BL7DL3S3 \
  | 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: 99b3c28a7c8085cbc987ffc2bf8d7b96cbf7259c78ae152d7b008a4e36f97a92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe7300bdfe4e9d87c2b7c56c8afea4f0b4898b5dd2e434416e6a5fa4f50f5ffb",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-05-19T21:34:34Z",
    "title_canon_sha256": "b8ba119129f53520ffc2ea304af34d49ad31ba0a4e2232f784f1f112cfae9658"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.07657",
    "kind": "arxiv",
    "version": 2
  }
}