pith. sign in
Pith Number

pith:I33ZGFZP

pith:2018:I33ZGFZPXDGOVT4C3KAYC5VW73
not attested not anchored not stored refs pending

On impedance conditions for circular multiperforated acoustic liners

Adrien Semin, Anastasia Th\"ons-Zueva, Friedrich Bake, Kersten Schmidt

arxiv:1801.04147 v2 · 2018-01-12 · physics.flu-dyn · math.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?
Add to your LaTeX paper 
\usepackage{pith}
\pithnumber{I33ZGFZPXDGOVT4C3KAYC5VW73}

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 2026-05-18T00:25:50.644786Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

46f793172fb8cceacf82da818176b6fed85ac326d915ed74c95a74d4d660a713

Aliases

arxiv: 1801.04147 · arxiv_version: 1801.04147v2 · doi: 10.48550/arxiv.1801.04147 · pith_short_12: I33ZGFZPXDGO · pith_short_16: I33ZGFZPXDGOVT4C · pith_short_8: I33ZGFZP
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/I33ZGFZPXDGOVT4C3KAYC5VW73 \
  | 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: 46f793172fb8cceacf82da818176b6fed85ac326d915ed74c95a74d4d660a713
Canonical record JSON 
{
  "metadata": {
    "abstract_canon_sha256": "5215f826f259f04615e65ab5c9997bc6f1f419ad89d6dca6e6fb2f654907f144",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2018-01-12T12:31:51Z",
    "title_canon_sha256": "9215f5c015da0b6e483be1b40588d20913e0eb561114d72020d2ec251604af47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.04147",
    "kind": "arxiv",
    "version": 2
  }
}