Pith Number

pith:UQKQPOGM

pith:2019:UQKQPOGMVBP5IWWPARGEXF3QFQ

not attested not anchored not stored refs pending

Convergence of the perfectly matched layer method for transient acoustic-elastic interaction above an unbounded rough surface

Bo Zhang, Changkun Wei, Jiaqing Yang

arxiv:1907.09703 v1 · 2019-07-23 · math.AP · cs.NA · 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{UQKQPOGMVBP5IWWPARGEXF3QFQ}

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	2026-05-17T23:39:50.343853Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a41507b8cca85fd45acf044c4b97702c1e8510c2a914b762370e7e79fbe14dce

Aliases

arxiv: 1907.09703 · arxiv_version: 1907.09703v1 · doi: 10.48550/arxiv.1907.09703 · pith_short_12: UQKQPOGMVBP5 · pith_short_16: UQKQPOGMVBP5IWWP · pith_short_8: UQKQPOGM

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/UQKQPOGMVBP5IWWPARGEXF3QFQ \
  | 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: a41507b8cca85fd45acf044c4b97702c1e8510c2a914b762370e7e79fbe14dce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea2764db8a140d7f5e021b5d2fdc0110228fb8bc35d2dcd3da4d3cf166966920",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-07-23T05:54:24Z",
    "title_canon_sha256": "bf98640a4457485469c4d86c44b15df75dbebe7dc5b5779d64d16cb0999571e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.09703",
    "kind": "arxiv",
    "version": 1
  }
}