Pith Number

pith:OPI2HDT4

pith:2015:OPI2HDT4MTF6BE3LTGA7NTGH3G

not attested not anchored not stored refs pending

An efficient high-order Nystr\"om scheme for acoustic scattering by inhomogeneous penetrable media with discontinuous material interface

Akash Anand, Ambuj Pandey, B. V. Rathish Kumar, Jagabandhu Paul

arxiv:1509.05063 v1 · 2015-09-16 · 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{OPI2HDT4MTF6BE3LTGA7NTGH3G}

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	2026-05-18T01:18:43.034000Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73d1a38e7c64cbe0936b9981f6ccc7d98eb983786cc36458803b045c4d89b7e5

Aliases

arxiv: 1509.05063 · arxiv_version: 1509.05063v1 · doi: 10.48550/arxiv.1509.05063 · pith_short_12: OPI2HDT4MTF6 · pith_short_16: OPI2HDT4MTF6BE3L · pith_short_8: OPI2HDT4

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/OPI2HDT4MTF6BE3LTGA7NTGH3G \
  | 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: 73d1a38e7c64cbe0936b9981f6ccc7d98eb983786cc36458803b045c4d89b7e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df379534d48c08a8061c2fd429c61bd46f4fa8344a83934f4fafc8fabed82bce",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-09-16T20:54:40Z",
    "title_canon_sha256": "fe707823b3e89d184c52364ad4473c24e14dcc3eb810b29edeef16deef04e4e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.05063",
    "kind": "arxiv",
    "version": 1
  }
}