Pith Number

pith:T74OIBKL

pith:2013:T74OIBKLAV5JI7QVTDQXH4PYVX

not attested not anchored not stored refs pending

Barycentric Pad\'e approximation

Claude Brezinski, Michela Redivo-Zaglia

arxiv:1307.4245 v2 · 2013-07-16 · 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{T74OIBKLAV5JI7QVTDQXH4PYVX}

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	2026-05-18T03:06:21.891859Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ff8e4054b057a947e1598e173f1f8adc9be3ea4365a44f2aa91250fe32fe8dd

Aliases

arxiv: 1307.4245 · arxiv_version: 1307.4245v2 · doi: 10.48550/arxiv.1307.4245 · pith_short_12: T74OIBKLAV5J · pith_short_16: T74OIBKLAV5JI7QV · pith_short_8: T74OIBKL

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/T74OIBKLAV5JI7QVTDQXH4PYVX \
  | 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: 9ff8e4054b057a947e1598e173f1f8adc9be3ea4365a44f2aa91250fe32fe8dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5ad9eda01ce6b6f19b30e1017a361ad4fd6da3c9ce47e3d3779ff9a771b8b80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-07-16T11:44:39Z",
    "title_canon_sha256": "7a5d2cc7857e7915e7a6b604b45643442d3dd033cbd9eadfde9bcc9af1e87339"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.4245",
    "kind": "arxiv",
    "version": 2
  }
}