Pith Number

pith:NI5TFFXO

pith:2013:NI5TFFXORPPZWN7Z24RULPAOSX

not attested not anchored not stored refs pending

Numerical Methods for the Fractional Laplacian: a Finite Difference-quadrature Approach

Adam Oberman, Yanghong Huang

arxiv:1311.7691 v3 · 2013-11-29 · 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{NI5TFFXORPPZWN7Z24RULPAOSX}

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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	2026-05-18T02:37:44.731188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a3b3296ee8bdf9b37f9d72345bc0e95fe05d4c0a4612feb65bc3ce8ebb5e542

Aliases

arxiv: 1311.7691 · arxiv_version: 1311.7691v3 · doi: 10.48550/arxiv.1311.7691 · pith_short_12: NI5TFFXORPPZ · pith_short_16: NI5TFFXORPPZWN7Z · pith_short_8: NI5TFFXO

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/NI5TFFXORPPZWN7Z24RULPAOSX \
  | 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: 6a3b3296ee8bdf9b37f9d72345bc0e95fe05d4c0a4612feb65bc3ce8ebb5e542

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f10ae3286431ccbe0ed31c1d8b0e992418fc242731e49b03dd0a53f4e40ada5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-11-29T20:56:42Z",
    "title_canon_sha256": "0f78c36e403af2b1e5c48e761d8e98d208cf18fc503c5eea422a3dfc78144b12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.7691",
    "kind": "arxiv",
    "version": 3
  }
}