Pith Number

pith:Z7VSA7XY

pith:2015:Z7VSA7XYBDLRVRXDUFWEH4QAVH

not attested not anchored not stored refs pending

On the implementation of the eXtended Finite Element Method (XFEM) for interface problems

Sven Wetterauer, Thomas Carraro

arxiv:1507.04238 v1 · 2015-07-15 · 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{Z7VSA7XYBDLRVRXDUFWEH4QAVH}

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	2026-05-18T01:36:48.796421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfeb207ef808d71ac6e3a16c43f200a9c0b03a99c0eeaf28902a4f77900b8b41

Aliases

arxiv: 1507.04238 · arxiv_version: 1507.04238v1 · doi: 10.48550/arxiv.1507.04238 · pith_short_12: Z7VSA7XYBDLR · pith_short_16: Z7VSA7XYBDLRVRXD · pith_short_8: Z7VSA7XY

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/Z7VSA7XYBDLRVRXDUFWEH4QAVH \
  | 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: cfeb207ef808d71ac6e3a16c43f200a9c0b03a99c0eeaf28902a4f77900b8b41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd3e595e51dc8cba6a4169dd29d05547cf95ab072b84f702bd2d297d65c1768f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-07-15T14:48:36Z",
    "title_canon_sha256": "59064cb624dda90886347b3473feb8eeea1389062440d93d7bda24e52edd8330"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.04238",
    "kind": "arxiv",
    "version": 1
  }
}