Pith Number

pith:RCKPR4KS

pith:2009:RCKPR4KS5BOJ25QLDABYSWAUER

not attested not anchored not stored refs pending

Finite-difference frequency-domain method for the extraction of effective parameters of metamaterials

Joao T. Costa, Mario G. Silveirinha, Stanislav I. Maslovski

arxiv:0907.3699 v2 · 2009-07-21 · 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{RCKPR4KS5BOJ25QLDABYSWAUER}

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	2026-05-18T02:12:54.958087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8894f8f152e85c9d760b180389581424462c349862d100d37b4f9e15f1e212e8

Aliases

arxiv: 0907.3699 · arxiv_version: 0907.3699v2 · doi: 10.48550/arxiv.0907.3699 · pith_short_12: RCKPR4KS5BOJ · pith_short_16: RCKPR4KS5BOJ25QL · pith_short_8: RCKPR4KS

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/RCKPR4KS5BOJ25QLDABYSWAUER \
  | 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: 8894f8f152e85c9d760b180389581424462c349862d100d37b4f9e15f1e212e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2fce0979ef46305905236f4b1824fbbc66a5c962c8854482206d566b35f23e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2009-07-21T16:46:01Z",
    "title_canon_sha256": "ae08b13c4964388a3e2c625b270cff6be490796e062b6a62b0f3dd5d643238c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3699",
    "kind": "arxiv",
    "version": 2
  }
}