Pith Number

pith:4VCOZ3CX

pith:2009:4VCOZ3CX2Z42SMQYN5BHNTHPLP

not attested not anchored not stored refs pending

Experimental evidence for new symmetry axis of electromagnetic beams

Chun-Fang Li

arxiv:0901.1586 v1 · 2009-01-12 · 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{4VCOZ3CX2Z42SMQYN5BHNTHPLP}

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	2026-05-18T01:21:45.563974Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e544ecec57d679a932186f4276ccef5bd9f872eb0aff03027ac51cee0d6cd7a4

Aliases

arxiv: 0901.1586 · arxiv_version: 0901.1586v1 · doi: 10.48550/arxiv.0901.1586 · pith_short_12: 4VCOZ3CX2Z42 · pith_short_16: 4VCOZ3CX2Z42SMQY · pith_short_8: 4VCOZ3CX

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/4VCOZ3CX2Z42SMQYN5BHNTHPLP \
  | 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: e544ecec57d679a932186f4276ccef5bd9f872eb0aff03027ac51cee0d6cd7a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a2e9846b72fd806d29b31476f10e099b816bbd43f953de0688b53bda34694e1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2009-01-12T14:33:16Z",
    "title_canon_sha256": "7ce79b59f37ef56078cdb4d4083c3e95417aa0816d89b23fd308a4e6f969a437"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.1586",
    "kind": "arxiv",
    "version": 1
  }
}