Pith Number

pith:4QVZZSKB

pith:2017:4QVZZSKBEYQ5AYKTCZCBDZIMJA

not attested not anchored not stored refs pending

Fast discrete convolution in $\mathbb{R}^2$ using Sparse Bessel Decomposition

Martin Averseng

arxiv:1711.07877 v1 · 2017-11-21 · 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{4QVZZSKBEYQ5AYKTCZCBDZIMJA}

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	2026-05-18T00:29:56.268574Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e42b9cc9412621d06153164411e50c480182431b7a95b7720f954f3110892dc6

Aliases

arxiv: 1711.07877 · arxiv_version: 1711.07877v1 · doi: 10.48550/arxiv.1711.07877 · pith_short_12: 4QVZZSKBEYQ5 · pith_short_16: 4QVZZSKBEYQ5AYKT · pith_short_8: 4QVZZSKB

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/4QVZZSKBEYQ5AYKTCZCBDZIMJA \
  | 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: e42b9cc9412621d06153164411e50c480182431b7a95b7720f954f3110892dc6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e3ef3321affaf2b7c5d06af8233d78016b4c7b40f17176cd0366d48b1a5c549",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-11-21T16:22:30Z",
    "title_canon_sha256": "a350eb40b644c990047b45b6cef68802a2595f010437f2b9cba61e7c5492e416"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.07877",
    "kind": "arxiv",
    "version": 1
  }
}