Pith Number

pith:DHRGJSUX

pith:2012:DHRGJSUXQBTZ4M2NW2PHQSITYV

not attested not anchored not stored refs pending

Bruggeman formalism vs. `Bruggeman formalism': Particulate composite materials comprising oriented ellipsoidal particles

Akhlesh Lakhtakia (Pennsylvania State University), Tom G. Mackay (University of Edinburgh)

arxiv:1201.5818 v1 · 2012-01-27 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DHRGJSUXQBTZ4M2NW2PHQSITYV}

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	2026-05-18T01:58:40.761932Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19e264ca9780679e334db69e784913c54b3396f7e7b8273400aceaedadeb1d70

Aliases

arxiv: 1201.5818 · arxiv_version: 1201.5818v1 · doi: 10.48550/arxiv.1201.5818 · pith_short_12: DHRGJSUXQBTZ · pith_short_16: DHRGJSUXQBTZ4M2N · pith_short_8: DHRGJSUX

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/DHRGJSUXQBTZ4M2NW2PHQSITYV \
  | 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: 19e264ca9780679e334db69e784913c54b3396f7e7b8273400aceaedadeb1d70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea08e7fc207afc037419d9cdbafbdae4f0876a845c03bd7ee6b74f2e1df00b6d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-01-27T16:24:06Z",
    "title_canon_sha256": "40b8aa7604264b0af1d49958bf4a91ff0272171d27aafe6bf1ae4a0dfd51c104"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.5818",
    "kind": "arxiv",
    "version": 1
  }
}