Pith Number

pith:DQCHZZWG

pith:2018:DQCHZZWGC6SHO7243VEEZYDAKS

not attested not anchored not stored refs pending

FEM and CIP-FEM for Helmholtz Equation with High Wave Number and PML truncation

Haijun Wu, Yonglin Li

arxiv:1806.09311 v1 · 2018-06-25 · 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{DQCHZZWGC6SHO7243VEEZYDAKS}

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	2026-05-18T00:12:29.710419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c047ce6c617a4777f5cdd484ce06054abc358f37a4af69cf2f756ca6ddcd470

Aliases

arxiv: 1806.09311 · arxiv_version: 1806.09311v1 · doi: 10.48550/arxiv.1806.09311 · pith_short_12: DQCHZZWGC6SH · pith_short_16: DQCHZZWGC6SHO724 · pith_short_8: DQCHZZWG

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/DQCHZZWGC6SHO7243VEEZYDAKS \
  | 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: 1c047ce6c617a4777f5cdd484ce06054abc358f37a4af69cf2f756ca6ddcd470

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "298dfa4150ee6f1c9334e362310c4989a837ba550ddae8e5cf7f0aa42eeec625",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-06-25T07:41:52Z",
    "title_canon_sha256": "3188cf9589697786fa7e4b89f15f4537feb725a32a5aecdc99ac2da72283f318"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.09311",
    "kind": "arxiv",
    "version": 1
  }
}