Pith Number

pith:WSJ6BPOX

pith:2012:WSJ6BPOXZBWKX7LK5UJKKLSUMO

not attested not anchored not stored refs pending

Soft-and-Hard/D'B' Boundary Conditions and their Realization by Electromagnetic Media

A. Sihvola, I.V. Lindell

arxiv:1204.3525 v1 · 2012-04-12 · physics.class-ph · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WSJ6BPOXZBWKX7LK5UJKKLSUMO}

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	2026-05-18T01:57:51.976828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b493e0bdd7c86cabfd6aed12a52e546387e3a72c48fe52c970a5a395fea67d84

Aliases

arxiv: 1204.3525 · arxiv_version: 1204.3525v1 · doi: 10.48550/arxiv.1204.3525 · pith_short_12: WSJ6BPOXZBWK · pith_short_16: WSJ6BPOXZBWKX7LK · pith_short_8: WSJ6BPOX

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/WSJ6BPOXZBWKX7LK5UJKKLSUMO \
  | 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: b493e0bdd7c86cabfd6aed12a52e546387e3a72c48fe52c970a5a395fea67d84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b70d08111bd639313279dcc12844314708d6d7e62dc48873c6be5630c7123b8",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2012-04-12T11:00:57Z",
    "title_canon_sha256": "94197b5e6392184e01d4e4e883111854fd73c97862269e477504110dfdc6e719"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.3525",
    "kind": "arxiv",
    "version": 1
  }
}