Pith Number

pith:5KHPCV5O

pith:2019:5KHPCV5OG2XVU5C4QC3FQICOVL

not attested not anchored not stored refs pending

Multivariate approximation of functions on irregular domains by weighted least-squares methods

Giovanni Migliorati

arxiv:1907.12304 v2 · 2019-07-29 · 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{5KHPCV5OG2XVU5C4QC3FQICOVL}

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.

Cited by

1 paper in Pith

Near-optimal sampling strategies for multivariate function approximation on general domains

Receipt and verification

First computed	2026-07-05T00:52:27.060824Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea8ef157ae36af5a745c80b658204eaae598263025b5b6d0e362186e8abfe685

Aliases

arxiv: 1907.12304 · arxiv_version: 1907.12304v2 · doi: 10.48550/arxiv.1907.12304 · pith_short_12: 5KHPCV5OG2XV · pith_short_16: 5KHPCV5OG2XVU5C4 · pith_short_8: 5KHPCV5O

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/5KHPCV5OG2XVU5C4QC3FQICOVL \
  | 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: ea8ef157ae36af5a745c80b658204eaae598263025b5b6d0e362186e8abfe685

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5ecd8e5773479d0fe05de36b7b31ba883cefc35280b6c2973e30b9c5b4799a4",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-07-29T09:44:24Z",
    "title_canon_sha256": "293d07a69c467643d688c6ad76a9ab63bca21b5bc9331183bff7be0fb4c441a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.12304",
    "kind": "arxiv",
    "version": 2
  }
}