Pith Number

pith:UYTBB2OG

pith:2018:UYTBB2OG2ZQOWVFK4FYZEYJLBB

not attested not anchored not stored refs pending

Quasi-Toeplitz matrix arithmetic: a MATLAB toolbox

Dario A. Bini, Leonardo Robol, Stefano Massei

arxiv:1801.08158 v2 · 2018-01-24 · 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{UYTBB2OG2ZQOWVFK4FYZEYJLBB}

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	2026-05-18T00:13:21.587876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a62610e9c6d660eb54aae17192612b0878492295cfa603637465a1363dddf28f

Aliases

arxiv: 1801.08158 · arxiv_version: 1801.08158v2 · doi: 10.48550/arxiv.1801.08158 · pith_short_12: UYTBB2OG2ZQO · pith_short_16: UYTBB2OG2ZQOWVFK · pith_short_8: UYTBB2OG

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/UYTBB2OG2ZQOWVFK4FYZEYJLBB \
  | 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: a62610e9c6d660eb54aae17192612b0878492295cfa603637465a1363dddf28f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a8109c85b6e996e05d28f4ed5a14079274bd08b9d300be02d454dcd8e06e888",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-01-24T19:16:55Z",
    "title_canon_sha256": "95442360987eba9cf27087478c15c8b201802289eb1f0dbf5e9d1ac3c57624b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.08158",
    "kind": "arxiv",
    "version": 2
  }
}