Pith Number

pith:G76EAVAS

pith:2014:G76EAVASECCQLSPEW6K4WVKPGF

not attested not anchored not stored refs pending

A Christoffel function weighted least squares algorithm for collocation approximations

Akil Narayan, John D. Jakeman, Tao Zhou

arxiv:1412.4305 v4 · 2014-12-14 · 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{G76EAVASECCQLSPEW6K4WVKPGF}

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

Sparse grids vs. random points for high-dimensional polynomial approximation

Receipt and verification

First computed	2026-06-04T16:08:59.531581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37fc405412208505c9e4b795cb554f3173e21dbe1f4ab9f617641b8e81275b9f

Aliases

arxiv: 1412.4305 · arxiv_version: 1412.4305v4 · doi: 10.48550/arxiv.1412.4305 · pith_short_12: G76EAVASECCQ · pith_short_16: G76EAVASECCQLSPE · pith_short_8: G76EAVAS

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/G76EAVASECCQLSPEW6K4WVKPGF \
  | 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: 37fc405412208505c9e4b795cb554f3173e21dbe1f4ab9f617641b8e81275b9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34b085435cc531f7a1b2064ae8d96b905966138c8a1915487ffec9b26b0e5084",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-12-14T02:27:55Z",
    "title_canon_sha256": "cc92a921159c17605c6f83db25344aa3f03c1663d475a051d5743e6b53e186ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.4305",
    "kind": "arxiv",
    "version": 4
  }
}