Pith Number

pith:BV2T3MFB

pith:2009:BV2T3MFB2AM2YCKPS5FGZDE3E2

not attested not anchored not stored refs pending

Diffraction-free beams in thin films

Carlos J. Zapata-Rodriguez

arxiv:0910.5642 v1 · 2009-10-29 · physics.optics · physics.class-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{BV2T3MFB2AM2YCKPS5FGZDE3E2}

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	2026-05-18T01:22:30.941424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d753db0a1d019ac094f974a6c8c9b268fce8fdf951dc780a2aa006191284983

Aliases

arxiv: 0910.5642 · arxiv_version: 0910.5642v1 · doi: 10.48550/arxiv.0910.5642 · pith_short_12: BV2T3MFB2AM2 · pith_short_16: BV2T3MFB2AM2YCKP · pith_short_8: BV2T3MFB

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/BV2T3MFB2AM2YCKPS5FGZDE3E2 \
  | 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: 0d753db0a1d019ac094f974a6c8c9b268fce8fdf951dc780a2aa006191284983

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5244d27def8b22819cb0846b48c87deb046ef771007f49044e8a60110116b79",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2009-10-29T13:52:19Z",
    "title_canon_sha256": "f48a488d482230be87abfe251ddbb5932bceeb9abfbd3dd3bc20fdcbe45f899d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5642",
    "kind": "arxiv",
    "version": 1
  }
}