Pith Number

pith:CH72P3SW

pith:2009:CH72P3SWJREY6R5EF5XT4GIOIS

not attested not anchored not stored refs pending

Broadband Negative Refraction with a Crossed Wire Mesh

M. G. Silveirinha

arxiv:0903.4980 v2 · 2009-03-28 · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CH72P3SWJREY6R5EF5XT4GIOIS}

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	2026-05-18T02:14:18.831588Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11ffa7ee564c498f47a42f6f3e190e44a0151e1b5ba3a2709dcba2f69b708973

Aliases

arxiv: 0903.4980 · arxiv_version: 0903.4980v2 · doi: 10.48550/arxiv.0903.4980 · pith_short_12: CH72P3SWJREY · pith_short_16: CH72P3SWJREY6R5E · pith_short_8: CH72P3SW

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/CH72P3SWJREY6R5EF5XT4GIOIS \
  | 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: 11ffa7ee564c498f47a42f6f3e190e44a0151e1b5ba3a2709dcba2f69b708973

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "147005d70dda5aefcfaf49e97efc0026d647da734de8978c599897d8e0aa1b17",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2009-03-28T17:38:55Z",
    "title_canon_sha256": "c519eecf8709bf4f44b604bbcc3c98b36fa1665c964ac7220b414eb5545590ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4980",
    "kind": "arxiv",
    "version": 2
  }
}