Pith Number

pith:4DPIO3II

pith:2014:4DPIO3II55W5PC4HC5UC2KT5NJ

not attested not anchored not stored refs pending

A frequency-independent boundary element method for scattering by two-dimensional screens and apertures

David P. Hewett, Simon N. Chandler-Wilde, Stephen Langdon

arxiv:1401.2786 v2 · 2014-01-13 · 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{4DPIO3II55W5PC4HC5UC2KT5NJ}

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	2026-05-18T02:45:31.719801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0de876d08ef6dd78b8717682d2a7d6a5724c6c5685b5e7decc17ff45749bab5

Aliases

arxiv: 1401.2786 · arxiv_version: 1401.2786v2 · doi: 10.48550/arxiv.1401.2786 · pith_short_12: 4DPIO3II55W5 · pith_short_16: 4DPIO3II55W5PC4H · pith_short_8: 4DPIO3II

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/4DPIO3II55W5PC4HC5UC2KT5NJ \
  | 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: e0de876d08ef6dd78b8717682d2a7d6a5724c6c5685b5e7decc17ff45749bab5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9380be601fc602832ba267ef7e90ab4183124c8c1100a779eba5c1d21997064",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-01-13T11:12:11Z",
    "title_canon_sha256": "e5eafcd021eb836d9051d9a63292e5c49eb7c57cdaa402701b8a354d7e6db234"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.2786",
    "kind": "arxiv",
    "version": 2
  }
}