Pith Number

pith:PZS2VWJJ

pith:2018:PZS2VWJJOKNZ3CCTZEXKXUINWH

not attested not anchored not stored refs pending

Eigenvector sensitivity under general and structured perturbations of tridiagonal Toeplitz-type matrices

Lothar Reichel, Silvia Noschese

arxiv:1808.02230 v2 · 2018-08-07 · 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{PZS2VWJJOKNZ3CCTZEXKXUINWH}

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	2026-05-17T23:47:36.163454Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e65aad929729b9d8853c92eabd10db1c0ba6d79d91bd9453c388b981e922c65

Aliases

arxiv: 1808.02230 · arxiv_version: 1808.02230v2 · doi: 10.48550/arxiv.1808.02230 · pith_short_12: PZS2VWJJOKNZ · pith_short_16: PZS2VWJJOKNZ3CCT · pith_short_8: PZS2VWJJ

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/PZS2VWJJOKNZ3CCTZEXKXUINWH \
  | 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: 7e65aad929729b9d8853c92eabd10db1c0ba6d79d91bd9453c388b981e922c65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e018be6426c72a3b142f4b71135c000f25875210ce698cbd41c0f77ddf7ad896",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-08-07T07:03:34Z",
    "title_canon_sha256": "cf7c8260b504acdcb8bdf827883ca07c1df4260f22a89d3630fd45c13f9a2565"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02230",
    "kind": "arxiv",
    "version": 2
  }
}