Pith Number

pith:XIHFBTX7

pith:2014:XIHFBTX7OTB7U52XRI3LKREHIB

not attested not anchored not stored refs pending

Tractability of the function approximation problem in terms of the kernel's shape and scale parameters

Fred J. Hickernell, Xuan Zhou

arxiv:1411.0790 v1 · 2014-11-04 · 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{XIHFBTX7OTB7U52XRI3LKREHIB}

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	2026-05-18T02:38:38.262124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba0e50ceff74c3fa77578a36b5448740452b0e6ae235df25427cf51715b8c9d4

Aliases

arxiv: 1411.0790 · arxiv_version: 1411.0790v1 · doi: 10.48550/arxiv.1411.0790 · pith_short_12: XIHFBTX7OTB7 · pith_short_16: XIHFBTX7OTB7U52X · pith_short_8: XIHFBTX7

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/XIHFBTX7OTB7U52XRI3LKREHIB \
  | 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: ba0e50ceff74c3fa77578a36b5448740452b0e6ae235df25427cf51715b8c9d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3887a8660c0f98ac1d3b9630ef6053b8902b4549c9b408d5c9bfe9e40b4e382",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-11-04T05:48:09Z",
    "title_canon_sha256": "9b195dad159df4f527770e8379f31a29ed7bd6e5a9bf02b8ae4be78f42a8dced"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.0790",
    "kind": "arxiv",
    "version": 1
  }
}