Pith Number

pith:ZM4QKRDU

pith:2009:ZM4QKRDUDCYCEMUKTJV2L5R4C3

not attested not anchored not stored refs pending

Divergence preservation in the ADI algorithms for electromagnetics

2), (2) University of Colorado), David N. Smithe (1), Johan A. Carlsson (1) ((1) Tech-X Corporation, John R. Cary (1

arxiv:0904.1758 v1 · 2009-04-10 · physics.plasm-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{ZM4QKRDUDCYCEMUKTJV2L5R4C3}

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	2026-05-18T02:14:06.476388Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb3905447418b022328a9a6ba5f63c16d2ba62e66d7b0ac135229d7c6dfde272

Aliases

arxiv: 0904.1758 · arxiv_version: 0904.1758v1 · doi: 10.48550/arxiv.0904.1758 · pith_short_12: ZM4QKRDUDCYC · pith_short_16: ZM4QKRDUDCYCEMUK · pith_short_8: ZM4QKRDU

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/ZM4QKRDUDCYCEMUKTJV2L5R4C3 \
  | 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: cb3905447418b022328a9a6ba5f63c16d2ba62e66d7b0ac135229d7c6dfde272

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ce620bca57ba1906e1f72eb2beda7e6ef6535eff5a15caa70add1198e48fffb",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.plasm-ph",
    "submitted_at": "2009-04-10T22:19:46Z",
    "title_canon_sha256": "00e7b6923bd9650e5b0c9dd0d238ccd91c403219c35ee3487f20d6ff14feefcc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1758",
    "kind": "arxiv",
    "version": 1
  }
}