Pith Number

pith:VYEBVFS2

pith:2019:VYEBVFS2DAWWAOMD7QGYJW4R5T

not attested not anchored not stored refs pending

Multiplication and division of the orbital angular momentum of light with diffractive transformation optics

Filippo Romanato, Gianluca Ruffato, Michele Massari

arxiv:1904.09153 v1 · 2019-04-19 · physics.optics · cond-mat.mtrl-sci · physics.app-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{VYEBVFS2DAWWAOMD7QGYJW4R5T}

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	2026-05-17T23:48:08.177351Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae081a965a182d603983fc0d84db91eccadcddfa8042c3a2414c09e59b158172

Aliases

arxiv: 1904.09153 · arxiv_version: 1904.09153v1 · doi: 10.48550/arxiv.1904.09153 · pith_short_12: VYEBVFS2DAWW · pith_short_16: VYEBVFS2DAWWAOMD · pith_short_8: VYEBVFS2

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/VYEBVFS2DAWWAOMD7QGYJW4R5T \
  | 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: ae081a965a182d603983fc0d84db91eccadcddfa8042c3a2414c09e59b158172

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae93a2ccb760f0f9b23973cad4aad8386487a37e19f3edaed3fda3dfc42b9afe",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci",
      "physics.app-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-04-19T11:49:05Z",
    "title_canon_sha256": "c12558c540be538e1b8bdd4561c39a85b449dbceb387b9a122e8f857c35f280c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09153",
    "kind": "arxiv",
    "version": 1
  }
}