Pith Number

pith:35M23LVF

pith:2017:35M23LVFLU547VGNRDFDBZ7DNN

not attested not anchored not stored refs pending

Constructing spatial discretizations for sparse multivariate trigonometric polynomials that allow for a fast discrete Fourier transform

Lutz K\"ammerer

arxiv:1703.07230 v2 · 2017-03-21 · 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{35M23LVFLU547VGNRDFDBZ7DNN}

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	2026-05-18T00:30:22.253423Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df59adaea55d3bcfd4cd88ca30e7e36b4d53a603b5f2857858c068bde07db520

Aliases

arxiv: 1703.07230 · arxiv_version: 1703.07230v2 · doi: 10.48550/arxiv.1703.07230 · pith_short_12: 35M23LVFLU54 · pith_short_16: 35M23LVFLU547VGN · pith_short_8: 35M23LVF

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/35M23LVFLU547VGNRDFDBZ7DNN \
  | 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: df59adaea55d3bcfd4cd88ca30e7e36b4d53a603b5f2857858c068bde07db520

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f89c3c843c7c5a572dfd9c3720a76cfc05e2eee9c18a1154b569e961c74f281",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-03-21T14:06:36Z",
    "title_canon_sha256": "f4278108c32099259ec308513d6e0ee6b295be76d66ccd4b40c4556ee7f38edc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.07230",
    "kind": "arxiv",
    "version": 2
  }
}