Pith Number

pith:UEDFGGVK

pith:2022:UEDFGGVKXTRBHYDCZYI45U3T2A

not attested not anchored not stored refs pending

Fast Toeplitz eigenvalue computations, joining interpolation-extrapolation matrix-less algorithms and simple-loop conjectures: the preconditioned setting

Manuel Bogoya, Paris Vassalos, Stefano Serra-Cappizano

arxiv:2203.11338 v1 · 2022-03-21 · 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{UEDFGGVKXTRBHYDCZYI45U3T2A}

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	2026-07-05T04:07:11.024651Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a106531aaabce213e062ce11ced373d0263b14ef530e3f8e3d01ff0f0afaa755

Aliases

arxiv: 2203.11338 · arxiv_version: 2203.11338v1 · doi: 10.48550/arxiv.2203.11338 · pith_short_12: UEDFGGVKXTRB · pith_short_16: UEDFGGVKXTRBHYDC · pith_short_8: UEDFGGVK

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/UEDFGGVKXTRBHYDCZYI45U3T2A \
  | 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: a106531aaabce213e062ce11ced373d0263b14ef530e3f8e3d01ff0f0afaa755

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7495fb94d00feb5a7db740e8dae9e7870ba5b6e723b173e726303bf4a7516c9",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2022-03-21T21:06:33Z",
    "title_canon_sha256": "0213aba89eafc0510c2a2bac09c39f124c31baf9658b9aa8e5c4b49003dcac62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.11338",
    "kind": "arxiv",
    "version": 1
  }
}