Pith Number

pith:KLYFYOHR

pith:2004:KLYFYOHRALMPIROT3BDQV44FPD

not attested not anchored not stored refs pending

On the Equivalence of the Digital Waveguide and Finite Difference Time Domain Schemes

Julius O. Smith III

arxiv:physics/0407032 v4 · 2004-07-06 · 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{KLYFYOHRALMPIROT3BDQV44FPD}

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	2026-05-18T00:37:06.761880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52f05c38f102d8f445d3d8470af38578f91c3f5c3637b433d3f82fcad30dd079

Aliases

arxiv: physics/0407032 · arxiv_version: physics/0407032v4 · doi: 10.48550/arxiv.physics/0407032 · pith_short_12: KLYFYOHRALMP · pith_short_16: KLYFYOHRALMPIROT · pith_short_8: KLYFYOHR

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/KLYFYOHRALMPIROT3BDQV44FPD \
  | 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: 52f05c38f102d8f445d3d8470af38578f91c3f5c3637b433d3f82fcad30dd079

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c76888aecb1def84ecef547a7dd8b74886ce8678174faa9ec75869a5af0de169",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2004-07-06T19:07:01Z",
    "title_canon_sha256": "3f2ee24321264636f680c033c12213ecfa779e24db4e3d62fd52efa279f9ebcb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0407032",
    "kind": "arxiv",
    "version": 4
  }
}