Pith Number

pith:2PQP7OIF

pith:2012:2PQP7OIFN73TCOKAKQARUH32FI

not attested not anchored not stored refs pending

Energy-momentum tensor is nonsymmetric for spin-polarized photons

Xiang-Bai Chen, Xiang-Song Chen

arxiv:1211.4407 v1 · 2012-11-19 · physics.gen-ph · physics.class-ph · 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{2PQP7OIFN73TCOKAKQARUH32FI}

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	2026-05-18T03:40:26.293786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3e0ffb9056ff731394054011a1f7a2a27eebf50cc6809dba956fe61bb036c1d

Aliases

arxiv: 1211.4407 · arxiv_version: 1211.4407v1 · doi: 10.48550/arxiv.1211.4407 · pith_short_12: 2PQP7OIFN73T · pith_short_16: 2PQP7OIFN73TCOKA · pith_short_8: 2PQP7OIF

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/2PQP7OIFN73TCOKAKQARUH32FI \
  | 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: d3e0ffb9056ff731394054011a1f7a2a27eebf50cc6809dba956fe61bb036c1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94236ecedfba146ea8b3ae3485afe15195da4f7bdb4dd5b58768b8d8494333c7",
    "cross_cats_sorted": [
      "physics.class-ph",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2012-11-19T13:30:14Z",
    "title_canon_sha256": "cc0d17cc65c79e819a649088a92114bfd9ece511314314f2b6a9b1e268821e96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.4407",
    "kind": "arxiv",
    "version": 1
  }
}