Pith Number

pith:CWNNSO2E

pith:2015:CWNNSO2E7TSXG6TPKFOHN3MXVZ

not attested not anchored not stored refs pending

High-dimensional periodic sampling on Smolyak grids based on B-spline quasi-interpolation

Dinh D\~ung

arxiv:1502.01447 v3 · 2015-02-05 · 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{CWNNSO2E7TSXG6TPKFOHN3MXVZ}

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	2026-05-18T01:23:45.151171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

159ad93b44fce5737a6f515c76ed97ae723525f3fc0be350dd0b672ba939d8b8

Aliases

arxiv: 1502.01447 · arxiv_version: 1502.01447v3 · doi: 10.48550/arxiv.1502.01447 · pith_short_12: CWNNSO2E7TSX · pith_short_16: CWNNSO2E7TSXG6TP · pith_short_8: CWNNSO2E

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/CWNNSO2E7TSXG6TPKFOHN3MXVZ \
  | 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: 159ad93b44fce5737a6f515c76ed97ae723525f3fc0be350dd0b672ba939d8b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30023e1d0d9c196fd71d11d8ef47d719b424ed0ed5c0c5acde816b5bd1e7a9d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-02-05T07:46:05Z",
    "title_canon_sha256": "560923a0c5d8977fa42d7ccb143c5388fc03e1af870a630a662df7129fa69f61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.01447",
    "kind": "arxiv",
    "version": 3
  }
}