Pith Number

pith:4ZXAPTDU

pith:2018:4ZXAPTDUMLZYATRQUK4AWCF2N7

not attested not anchored not stored refs pending

Optimal Radix-2 FFT Compatible Filters for GFDM

Ahmad Nimr, Dan Zhang, Gerhard Fettweis, Maximilian Matthe

arxiv:1806.07924 v1 · 2018-06-20 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4ZXAPTDUMLZYATRQUK4AWCF2N7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:12:42.622662Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e66e07cc7462f3804e30a2b80b08ba6fcee67d854a3ebda7939e2f9385ac3c85

Aliases

arxiv: 1806.07924 · arxiv_version: 1806.07924v1 · doi: 10.48550/arxiv.1806.07924 · pith_short_12: 4ZXAPTDUMLZY · pith_short_16: 4ZXAPTDUMLZYATRQ · pith_short_8: 4ZXAPTDU

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/4ZXAPTDUMLZYATRQUK4AWCF2N7 \
  | 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: e66e07cc7462f3804e30a2b80b08ba6fcee67d854a3ebda7939e2f9385ac3c85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8d006324f7a6c2183e9a07d5af9dd93453a3bea2f0066ae51ff24d967672c33",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2018-06-20T18:43:16Z",
    "title_canon_sha256": "94aca04168242b7a7b603729cb2bc9404a1fa5042facd413ff3fae4a0c239de4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07924",
    "kind": "arxiv",
    "version": 1
  }
}