Pith Number

pith:DRVA733V

pith:2020:DRVA733V4IIPQEWDO4IESJW2VD

not attested not anchored not stored refs pending

A Faster Fourier Transform? Computing Small-Scale Power Spectra and Bispectra for Cosmological Simulations in $\mathcal{O}(N^2)$ Time

Oliver H.E. Philcox

arxiv:2005.01739 v3 · 2020-05-04 · astro-ph.CO · astro-ph.IM · gr-qc · physics.comp-ph · physics.data-an

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DRVA733V4IIPQEWDO4IESJW2VD}

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	2026-07-05T02:08:17.787144Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c6a0fef75e210f812c377104926daa8f0cc6861a14870de72e49b9a2cf15268

Aliases

arxiv: 2005.01739 · arxiv_version: 2005.01739v3 · doi: 10.48550/arxiv.2005.01739 · pith_short_12: DRVA733V4IIP · pith_short_16: DRVA733V4IIPQEWD · pith_short_8: DRVA733V

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/DRVA733V4IIPQEWDO4IESJW2VD \
  | 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: 1c6a0fef75e210f812c377104926daa8f0cc6861a14870de72e49b9a2cf15268

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4007f62c75ce482471a71ac7334f5f323aa901873bfd7899196596f3b880e7a",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "gr-qc",
      "physics.comp-ph",
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2020-05-04T18:00:04Z",
    "title_canon_sha256": "0566e7f4eb5475686151fd83d1d5be2288e2d2dadbf57dcf404a76468cba333c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.01739",
    "kind": "arxiv",
    "version": 3
  }
}