Pith Number

pith:SIQUD2UN

pith:2009:SIQUD2UN5BVTUCVKFSK7KY4XCF

not attested not anchored not stored refs pending

A Double Layer Electromagnetic Cloak And GL EM Modeling

Feng Xie, Ganquan Xie, Jianhua Li, Lee Xie

arxiv:0907.0858 v1 · 2009-07-05 · physics.optics · 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{SIQUD2UN5BVTUCVKFSK7KY4XCF}

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	2026-05-18T00:53:45.716957Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

922141ea8de86b3a0aaa2c95f56397115fa634f536ee2e54324d9c010b55e067

Aliases

arxiv: 0907.0858 · arxiv_version: 0907.0858v1 · doi: 10.48550/arxiv.0907.0858 · pith_short_12: SIQUD2UN5BVT · pith_short_16: SIQUD2UN5BVTUCVK · pith_short_8: SIQUD2UN

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/SIQUD2UN5BVTUCVKFSK7KY4XCF \
  | 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: 922141ea8de86b3a0aaa2c95f56397115fa634f536ee2e54324d9c010b55e067

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b442520a4dd295725e84be41881ab70157c4cfb0f9659bfad3e1979243061f0",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2009-07-05T14:02:39Z",
    "title_canon_sha256": "9bf5b22068587aa77214a1d145a76d5b7783f919c9db85198399807608315787"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0858",
    "kind": "arxiv",
    "version": 1
  }
}