Pith Number

pith:X4VAVBPX

pith:2017:X4VAVBPX35I7ITWITPMDIOY4WI

not attested not anchored not stored refs pending

A Surface Admittance Equivalence Principle for Non-Radiating and Cloaking Problems

Andrea Al\`u, Giuseppe Labate, Ladislau Matekovits

arxiv:1704.00039 v1 · 2017-03-27 · physics.class-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X4VAVBPX35I7ITWITPMDIOY4WI}

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	2026-05-18T00:40:58.272288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf2a0a85f7df51f44ec89bd8343b1cb21093f2a23da27c2b286b15f2862aa9b6

Aliases

arxiv: 1704.00039 · arxiv_version: 1704.00039v1 · doi: 10.48550/arxiv.1704.00039 · pith_short_12: X4VAVBPX35I7 · pith_short_16: X4VAVBPX35I7ITWI · pith_short_8: X4VAVBPX

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/X4VAVBPX35I7ITWITPMDIOY4WI \
  | 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: bf2a0a85f7df51f44ec89bd8343b1cb21093f2a23da27c2b286b15f2862aa9b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ddf146f0896bbfab79e418a35d70257f96b98e81fc2475a2737178c1e20bc55",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2017-03-27T17:43:42Z",
    "title_canon_sha256": "18b319d3776c6a8cc7c7ac63d401600fb0f9bc483d2d9efb1615291e377b05f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.00039",
    "kind": "arxiv",
    "version": 1
  }
}