Pith Number

pith:VP7YIWSJ

pith:2009:VP7YIWSJHI26IY6E2NEP6Z3MUG

not attested not anchored not stored refs pending

Choosing Dielectric or Magnetic Material to Optimize the Bandwidth of Miniaturized Resonant Antennas

Antti O. Karilainen, Constantin R. Simovski, Pekka Ikonen, Sergei A. Tretyakov

arxiv:0907.2132 v1 · 2009-07-13 · physics.class-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{VP7YIWSJHI26IY6E2NEP6Z3MUG}

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	2026-05-18T04:11:39.803437Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abff845a493a35e463c4d348ff676ca1b7ca006def8689e56d81560c3d772bbe

Aliases

arxiv: 0907.2132 · arxiv_version: 0907.2132v1 · doi: 10.48550/arxiv.0907.2132 · pith_short_12: VP7YIWSJHI26 · pith_short_16: VP7YIWSJHI26IY6E · pith_short_8: VP7YIWSJ

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/VP7YIWSJHI26IY6E2NEP6Z3MUG \
  | 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: abff845a493a35e463c4d348ff676ca1b7ca006def8689e56d81560c3d772bbe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d882c1f668d3057c5d01d90b36951e6a60a3dadc650946349fc2c6c8f2f7bf1a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2009-07-13T10:51:35Z",
    "title_canon_sha256": "e2b18933a817c60792af51de2a5fb167daf6061de9f365e22ef5c7b1ebfa68d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2132",
    "kind": "arxiv",
    "version": 1
  }
}