Pith Number

pith:RR5VX4OI

pith:2017:RR5VX4OI4B7A5FII237WYNSZRF

not attested not anchored not stored refs pending

Morley-Wang-Xu element methods with penalty for a fourth order elliptic singular perturbation problem

Kai Tang, Ruiyue Zhou, Wenqing Wang, Xuehai Huang

arxiv:1712.08863 v2 · 2017-12-24 · 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{RR5VX4OI4B7A5FII237WYNSZRF}

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	2026-05-18T00:11:57.615966Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c7b5bf1c8e07e0e9508d6ff6c3659897d921598b69c6d30d57afbe7ddd28673

Aliases

arxiv: 1712.08863 · arxiv_version: 1712.08863v2 · doi: 10.48550/arxiv.1712.08863 · pith_short_12: RR5VX4OI4B7A · pith_short_16: RR5VX4OI4B7A5FII · pith_short_8: RR5VX4OI

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/RR5VX4OI4B7A5FII237WYNSZRF \
  | 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: 8c7b5bf1c8e07e0e9508d6ff6c3659897d921598b69c6d30d57afbe7ddd28673

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6262aef2ae48c5d2758a7a4e1bc489dcef3e7f420778f2d9eeef5cb0b8d2275",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-12-24T01:19:06Z",
    "title_canon_sha256": "5c3ad40a8d9533aa2a506f93c8f0d3695955216490f90b33a24382d2afaba694"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.08863",
    "kind": "arxiv",
    "version": 2
  }
}