Pith Number

pith:W2QJMCW4

pith:2018:W2QJMCW4EZKPBGZGF3YY4XO67P

not attested not anchored not stored refs pending

Sinc approximation of algebraically decaying functions

Dmytro Sytnyk

arxiv:1809.07369 v2 · 2018-09-19 · math.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{W2QJMCW4EZKPBGZGF3YY4XO67P}

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	2026-05-18T00:04:44.346620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6a0960adc2654f09b262ef18e5ddefbfb785b7a1ec0346501f7c7d471acd7ef

Aliases

arxiv: 1809.07369 · arxiv_version: 1809.07369v2 · doi: 10.48550/arxiv.1809.07369 · pith_short_12: W2QJMCW4EZKP · pith_short_16: W2QJMCW4EZKPBGZG · pith_short_8: W2QJMCW4

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/W2QJMCW4EZKPBGZGF3YY4XO67P \
  | 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: b6a0960adc2654f09b262ef18e5ddefbfb785b7a1ec0346501f7c7d471acd7ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15c65411abb55b37afc740ea29bc0d334b19b44db9c4e84232f0f29e7bf69e53",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-09-19T19:04:45Z",
    "title_canon_sha256": "9899700f5f6c3221e3d0c4ead91a19e524c42dd91fca47dbcf9f3bcce399e759"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.07369",
    "kind": "arxiv",
    "version": 2
  }
}