Pith Number

pith:C7QQRWFI

pith:2021:C7QQRWFI7M4CCJGD6ZF5TY7JBX

not attested not anchored not stored refs pending

On the Spurious Interior Resonance Modes of Time Domain Integral Equations for Analyzing Acoustic Scattering from Penetrable Objects

Hakan Bagci, Mingyu Lu, Rui Chen, Sadeed Bin Sayed, Yifei Shi

arxiv:2108.04889 v1 · 2021-08-10 · physics.comp-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C7QQRWFI7M4CCJGD6ZF5TY7JBX}

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	2026-07-05T08:21:02.573274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17e108d8a8fb382124c3f64bd9e3e90df5ea1ff41cdc4acc10c66ff69b123b40

Aliases

arxiv: 2108.04889 · arxiv_version: 2108.04889v1 · doi: 10.48550/arxiv.2108.04889 · pith_short_12: C7QQRWFI7M4C · pith_short_16: C7QQRWFI7M4CCJGD · pith_short_8: C7QQRWFI

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/C7QQRWFI7M4CCJGD6ZF5TY7JBX \
  | 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: 17e108d8a8fb382124c3f64bd9e3e90df5ea1ff41cdc4acc10c66ff69b123b40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d6300e05c6e210dcbed2c7eeb48693546668acd74472e58cc5a53bf34773147",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2021-08-10T19:28:32Z",
    "title_canon_sha256": "7e1884858bf7f50c6ca30f09b7415e2f5bc8b1362f381acfd2dd9dc2225f886c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.04889",
    "kind": "arxiv",
    "version": 1
  }
}