Pith Number

pith:3HONMGC6

pith:2018:3HONMGC6I5I2XMVYPTZMI7CF24

not attested not anchored not stored refs pending

Sparse Fast DCT for Vectors with One-block Support

Gerlind Plonka, Sina Bittens

arxiv:1803.05207 v1 · 2018-03-14 · math.NA · cs.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{3HONMGC6I5I2XMVYPTZMI7CF24}

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	2026-06-04T19:11:41.184036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9dcd6185e4751abb2b87cf2c47c45d725c8f49ce19784236f18a16e3d18ff52

Aliases

arxiv: 1803.05207 · arxiv_version: 1803.05207v1 · doi: 10.48550/arxiv.1803.05207 · pith_short_12: 3HONMGC6I5I2 · pith_short_16: 3HONMGC6I5I2XMVY · pith_short_8: 3HONMGC6

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/3HONMGC6I5I2XMVYPTZMI7CF24 \
  | 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: d9dcd6185e4751abb2b87cf2c47c45d725c8f49ce19784236f18a16e3d18ff52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "151fcacecb224820d844bf0e43f9d20fb58e38d673b70ae9d877b8fa4c9e5204",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-03-14T11:23:23Z",
    "title_canon_sha256": "2e6081dd035bd6270eafeb4bb85a6b5efd6cf8b960f9defc4727a7eeb6d0ea20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.05207",
    "kind": "arxiv",
    "version": 1
  }
}