Pith Number

pith:C6A2P7WJ

pith:2016:C6A2P7WJRRFH75OT4WHC7HPFJF

not attested not anchored not stored refs pending

A sparse multidimensional FFT for real positive vectors

Benoit Meister, Harper Langston, Pierre-David Letourneau, Richard Lethin

arxiv:1604.06682 v6 · 2016-04-22 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C6A2P7WJRRFH75OT4WHC7HPFJF}

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	2026-05-18T00:55:39.219800Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1781a7fec98c4a7ff5d3e58e2f9de54959b33633ff3d57c233f8d4861d3ed95d

Aliases

arxiv: 1604.06682 · arxiv_version: 1604.06682v6 · doi: 10.48550/arxiv.1604.06682 · pith_short_12: C6A2P7WJRRFH · pith_short_16: C6A2P7WJRRFH75OT · pith_short_8: C6A2P7WJ

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/C6A2P7WJRRFH75OT4WHC7HPFJF \
  | 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: 1781a7fec98c4a7ff5d3e58e2f9de54959b33633ff3d57c233f8d4861d3ed95d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b73db3ecbe4037f0c7c52695b0bf5da91e95ae6f1fd66221eca41dd681e7c58",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-04-22T14:39:33Z",
    "title_canon_sha256": "b883ccc4d9ee5a42586cc37fc2a6e6bcdb1c647c58edf258a6152c2f65c71b7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.06682",
    "kind": "arxiv",
    "version": 6
  }
}