Pith Number

pith:T4QHMP6N

pith:2022:T4QHMP6NJGAWAXS3ZTVDRPCTTT

not attested not anchored not stored refs pending

Theoretical results for eigenvalues, singular values, and eigenvectors of (flipped) Toeplitz matrices and related computational proposals

Giovanni Barbarino, Paris Vassalos, Stefano Serra-Capizzano, Sven-Erik Ekstr\"om

arxiv:2203.06992 v2 · 2022-03-14 · 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{T4QHMP6NJGAWAXS3ZTVDRPCTTT}

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	2026-07-05T04:41:11.701284Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f20763fcd4981605e5bccea38bc539cfea8142fc50b75a09123760e823226cd

Aliases

arxiv: 2203.06992 · arxiv_version: 2203.06992v2 · doi: 10.48550/arxiv.2203.06992 · pith_short_12: T4QHMP6NJGAW · pith_short_16: T4QHMP6NJGAWAXS3 · pith_short_8: T4QHMP6N

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/T4QHMP6NJGAWAXS3ZTVDRPCTTT \
  | 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: 9f20763fcd4981605e5bccea38bc539cfea8142fc50b75a09123760e823226cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c24a46b8b2b0dceb0dce55a3c731267bc68ab77f02566f29fea7255e549919fd",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2022-03-14T10:55:43Z",
    "title_canon_sha256": "afe4bd2526cb412feed56d705bdcf77b734b93e8e2f5c82029d546a0e18e40a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.06992",
    "kind": "arxiv",
    "version": 2
  }
}