Pith Number

pith:NLKRMVY2

pith:2026:NLKRMVY2V7JM6H46KRN2VYND2V

not attested not anchored not stored refs pending

A perfectly matched layer for damping vertically propagating waves in the compressible Boussinesq equations

David Lee, Kenneth Duru, Timothy C. Andrews

arxiv:2606.28303 v1 · 2026-06-26 · math.NA · cs.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{NLKRMVY2V7JM6H46KRN2VYND2V}

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	2026-06-29T01:15:12.531416Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ad516571aafd2cf1f9e545baae1a3d54da0a78ec04cab104a7ac13d5f96edbf

Aliases

arxiv: 2606.28303 · arxiv_version: 2606.28303v1 · doi: 10.48550/arxiv.2606.28303 · pith_short_12: NLKRMVY2V7JM · pith_short_16: NLKRMVY2V7JM6H46 · pith_short_8: NLKRMVY2

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/NLKRMVY2V7JM6H46KRN2VYND2V \
  | 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: 6ad516571aafd2cf1f9e545baae1a3d54da0a78ec04cab104a7ac13d5f96edbf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60f994c0c6e3198a486eeada1b8ee10f74cf06143cf0ec3b1ce24876f36f7e34",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-06-26T17:48:18Z",
    "title_canon_sha256": "3035bbc296c4d244107b125f681c8879ba61e2856014ef5244f571799f1e52fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.28303",
    "kind": "arxiv",
    "version": 1
  }
}