Pith Number

pith:HRD7OQIM

pith:2017:HRD7OQIMNIPYD74UEWGPPJ6VYO

not attested not anchored not stored refs pending

Chebyshev multivariate polynomial approximation and point reduction procedure

David Yost, Julien Ugon, Nadezda Sukhorukova

arxiv:1708.09743 v1 · 2017-08-30 · 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{HRD7OQIMNIPYD74UEWGPPJ6VYO}

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	2026-05-18T00:36:15.573992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c47f7410c6a1f81ff94258cf7a7d5c3819410c6ee04e8f0495d838b0de1c2e2

Aliases

arxiv: 1708.09743 · arxiv_version: 1708.09743v1 · doi: 10.48550/arxiv.1708.09743 · pith_short_12: HRD7OQIMNIPY · pith_short_16: HRD7OQIMNIPYD74U · pith_short_8: HRD7OQIM

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/HRD7OQIMNIPYD74UEWGPPJ6VYO \
  | 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: 3c47f7410c6a1f81ff94258cf7a7d5c3819410c6ee04e8f0495d838b0de1c2e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa61d8b78b7986bf8ea17c2d0a40296526f8ff4693683d9e1d938a64fdf32dbb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-08-30T05:54:33Z",
    "title_canon_sha256": "ac63fbaaf2a7c1bf26543bcee476de5f60382ee113858c27b59970ecc8b21708"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.09743",
    "kind": "arxiv",
    "version": 1
  }
}