Pith Number

pith:3SALY5HS

pith:2018:3SALY5HSQPSM2QAG62JRLREKZI

not attested not anchored not stored refs pending

Fourier transform inversion using an elementary differential equation and a contour integral

Erik Talvila

arxiv:1808.04313 v1 · 2018-08-13 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3SALY5HSQPSM2QAG62JRLREKZI}

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	2026-05-18T00:08:16.720855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc80bc74f283e4cd4006f69315c48aca17eadf9e71ce09be4202292ee281f55b

Aliases

arxiv: 1808.04313 · arxiv_version: 1808.04313v1 · doi: 10.48550/arxiv.1808.04313 · pith_short_12: 3SALY5HSQPSM · pith_short_16: 3SALY5HSQPSM2QAG · pith_short_8: 3SALY5HS

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/3SALY5HSQPSM2QAG62JRLREKZI \
  | 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: dc80bc74f283e4cd4006f69315c48aca17eadf9e71ce09be4202292ee281f55b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1020f6b4755244281d61c1ca4852373650ed282508b52c9ef1786a60733a44c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2018-08-13T16:15:09Z",
    "title_canon_sha256": "a105aa356cca31a17db934bf8f0907aaf08aeef41ca64a1af458203844c15ee8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.04313",
    "kind": "arxiv",
    "version": 1
  }
}