Pith Number

pith:A54BFIZE

pith:2015:A54BFIZEZVOXPHYT7ATLTVFPYN

not attested not anchored not stored refs pending

A short note on the nested-sweep polarized traces method for the 2D Helmholtz equation

Laurent Demanet, Leonardo Zepeda-N\'u\~nez

arxiv:1504.04427 v1 · 2015-04-17 · 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{A54BFIZEZVOXPHYT7ATLTVFPYN}

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	2026-05-18T02:18:32.408434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

077812a324cd5d779f13f826b9d4afc35f729d6bd50d700e24b102b163ea42f7

Aliases

arxiv: 1504.04427 · arxiv_version: 1504.04427v1 · doi: 10.48550/arxiv.1504.04427 · pith_short_12: A54BFIZEZVOX · pith_short_16: A54BFIZEZVOXPHYT · pith_short_8: A54BFIZE

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/A54BFIZEZVOXPHYT7ATLTVFPYN \
  | 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: 077812a324cd5d779f13f826b9d4afc35f729d6bd50d700e24b102b163ea42f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dde71a965793e762ba1087eca9697a8b465453f9f5af9fc71e7d2148eeda47d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-04-17T02:41:07Z",
    "title_canon_sha256": "b1c13588e953c4deda075d812883a4d1978efd9ca35a873b0c6a5a64c0084adc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04427",
    "kind": "arxiv",
    "version": 1
  }
}