Pith Number

pith:7SQ3E2CF

pith:2019:7SQ3E2CF2V7JVKM7NL3Z7DGCTJ

not attested not anchored not stored refs pending

Orbital-to-Spin Angular Momentum Conversion Employing Local Helicity

Gerd Leuchs, J\"org S. Eismann, Peter Banzer, Sergey Nechayev

arxiv:1902.01756 v1 · 2019-02-05 · 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{7SQ3E2CF2V7JVKM7NL3Z7DGCTJ}

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	2026-05-17T23:52:02.862191Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fca1b26845d57e9aa99f6af79f8cc29a7c1519cb168b834ac97aabd54386d96d

Aliases

arxiv: 1902.01756 · arxiv_version: 1902.01756v1 · doi: 10.48550/arxiv.1902.01756 · pith_short_12: 7SQ3E2CF2V7J · pith_short_16: 7SQ3E2CF2V7JVKM7 · pith_short_8: 7SQ3E2CF

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/7SQ3E2CF2V7JVKM7NL3Z7DGCTJ \
  | 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: fca1b26845d57e9aa99f6af79f8cc29a7c1519cb168b834ac97aabd54386d96d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee7417d0a352cae6c459dac8dc124a6ae910d0c34fb88f8b4bec7e710338e6ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-02-05T15:56:58Z",
    "title_canon_sha256": "7624bba4b272d749ed276e10f233a4ed5fe81570e4291e8ed5ddc4140446e036"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.01756",
    "kind": "arxiv",
    "version": 1
  }
}