Pith Number

pith:YPAAZITC

pith:2018:YPAAZITCERURAEQ7C4V34JD2ZP

not attested not anchored not stored refs pending

A nonconforming Trefftz virtual element method for the Helmholtz problem

A. Pichler, I. Perugia, L. Mascotto

arxiv:1805.05634 v2 · 2018-05-15 · 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{YPAAZITCERURAEQ7C4V34JD2ZP}

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	2026-05-18T00:02:19.384375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3c00ca262246910121f172bbe247acbcb9331398beff3133ad9033cd264f3b9

Aliases

arxiv: 1805.05634 · arxiv_version: 1805.05634v2 · doi: 10.48550/arxiv.1805.05634 · pith_short_12: YPAAZITCERUR · pith_short_16: YPAAZITCERURAEQ7 · pith_short_8: YPAAZITC

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/YPAAZITCERURAEQ7C4V34JD2ZP \
  | 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: c3c00ca262246910121f172bbe247acbcb9331398beff3133ad9033cd264f3b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "153b274a82deaeab87db2d9a9bc90c68581c7e02058a925d0bdccc879326bb68",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-05-15T08:26:36Z",
    "title_canon_sha256": "f437f8050a1787885ab9ed41c356059dfdd7b2d69e45ede8a9638bfb6cd00062"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.05634",
    "kind": "arxiv",
    "version": 2
  }
}