Pith Number

pith:XXYNTGQV

pith:2004:XXYNTGQVCAHPIEMACJAJ2EOOFC

not attested not anchored not stored refs pending

Spectral Methods for Partial Differential Equations in Irregular Domains: The Spectral Smoothed Boundary Method

Alfonso Bueno-Orovio, Flavio H. Fenton, Victor M. Perez-Garcia

arxiv:math/0406327 v1 · 2004-06-16 · math.NA · cs.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{XXYNTGQVCAHPIEMACJAJ2EOOFC}

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	2026-06-03T22:06:15.359680Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdf0d99a15100ef4118012409d11ce28935316421d5bac7f2ac49051c8aa9338

Aliases

arxiv: math/0406327 · arxiv_version: math/0406327v1 · doi: 10.48550/arxiv.math/0406327 · pith_short_12: XXYNTGQVCAHP · pith_short_16: XXYNTGQVCAHPIEMA · pith_short_8: XXYNTGQV

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/XXYNTGQVCAHPIEMACJAJ2EOOFC \
  | 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: bdf0d99a15100ef4118012409d11ce28935316421d5bac7f2ac49051c8aa9338

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5822f4c8070eae6a31ec53cc5ca5d97dda54d5353d391eacb3c5f9a974d949d",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "",
    "primary_cat": "math.NA",
    "submitted_at": "2004-06-16T15:37:37Z",
    "title_canon_sha256": "eaab4da5e2f065145859a9c6f52c267fa380069b41b8d06db58f570f3f38f546"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0406327",
    "kind": "arxiv",
    "version": 1
  }
}