Pith Number

pith:X66BX7O7

pith:2015:X66BX7O7BSINJDWHRRYDKFKSJY

not attested not anchored not stored refs pending

On photon angular momentum: transversality condition, Berry degree of freedom, and non-commutativity of photon position

Chun-Fang Li

arxiv:1501.06672 v1 · 2015-01-27 · quant-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{X66BX7O7BSINJDWHRRYDKFKSJY}

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	2026-05-18T02:28:39.392124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfbc1bfddf0c90d48ec78c703515524e1dbe7d9a405ebef7f91250286c30695a

Aliases

arxiv: 1501.06672 · arxiv_version: 1501.06672v1 · doi: 10.48550/arxiv.1501.06672 · pith_short_12: X66BX7O7BSIN · pith_short_16: X66BX7O7BSINJDWH · pith_short_8: X66BX7O7

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/X66BX7O7BSINJDWHRRYDKFKSJY \
  | 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: bfbc1bfddf0c90d48ec78c703515524e1dbe7d9a405ebef7f91250286c30695a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d49f654d70be2c29e634b0dfb737c55561315887f048bcb33d622c6cfdb8839e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-01-27T07:17:25Z",
    "title_canon_sha256": "d3a3ca26ca64e93461e2af0ffe5b8d902509970152128c42018c0a3542db856c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.06672",
    "kind": "arxiv",
    "version": 1
  }
}