Pith Number

pith:36WAADAB

pith:2011:36WAADABKHMHIPD57ZYQGXC4JK

not attested not anchored not stored refs pending

On FFT-based convolutions and correlations, with application to solving Poisson's equation in an open rectangular pipe

Robert D. Ryne

arxiv:1111.4971 v1 · 2011-11-21 · physics.acc-ph · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{36WAADABKHMHIPD57ZYQGXC4JK}

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	2026-05-18T04:07:54.622333Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfac000c0151d8743c7dfe71035c5c4aa5f1fd9890b232bef2c731512ed780c6

Aliases

arxiv: 1111.4971 · arxiv_version: 1111.4971v1 · doi: 10.48550/arxiv.1111.4971 · pith_short_12: 36WAADABKHMH · pith_short_16: 36WAADABKHMHIPD5 · pith_short_8: 36WAADAB

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/36WAADABKHMHIPD57ZYQGXC4JK \
  | 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: dfac000c0151d8743c7dfe71035c5c4aa5f1fd9890b232bef2c731512ed780c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0a8a6968204fa42e385606cda192962213bc8257574f1d32e798e2f72dceefc",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.acc-ph",
    "submitted_at": "2011-11-21T18:59:57Z",
    "title_canon_sha256": "878c3fb55798d728d2667aecc92991532b8a39c79399ec2d74fe34d1f22fe3ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.4971",
    "kind": "arxiv",
    "version": 1
  }
}