Pith Number

pith:SFEJ2LFT

pith:2017:SFEJ2LFTYHCHX43VDJO5F3KT5X

not attested not anchored not stored refs pending

A new algorithm for fast generalized DFTs

Chloe Ching-Yun Hsu, Chris Umans

arxiv:1707.00349 v3 · 2017-07-02 · cs.DS · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SFEJ2LFTYHCHX43VDJO5F3KT5X}

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	2026-05-18T00:19:47.503891Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91489d2cb3c1c47bf3751a5dd2ed53edf579fe647e817b6b03441a16db0a29aa

Aliases

arxiv: 1707.00349 · arxiv_version: 1707.00349v3 · doi: 10.48550/arxiv.1707.00349 · pith_short_12: SFEJ2LFTYHCH · pith_short_16: SFEJ2LFTYHCHX43V · pith_short_8: SFEJ2LFT

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/SFEJ2LFTYHCHX43VDJO5F3KT5X \
  | 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: 91489d2cb3c1c47bf3751a5dd2ed53edf579fe647e817b6b03441a16db0a29aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "479eb6844f642fd78d01f166552a8091854f01d01f42676180c43e790fdc1935",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-07-02T20:41:10Z",
    "title_canon_sha256": "d24307bddb0e0af1c3a2bc793e2ec38ea910dcc80918ec7437b2f6b2a0f19815"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.00349",
    "kind": "arxiv",
    "version": 3
  }
}