Pith Number

pith:RBD2CESR

pith:2005:RBD2CESRLELZSWDOWIJJJCWQQU

not attested not anchored not stored refs pending

Covariant Irreducible Parametrization of Electromagnetic Fields in Arbitrary Spacetime

David Sundkvist

arxiv:physics/0508124 v2 · 2005-08-18 · 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{RBD2CESRLELZSWDOWIJJJCWQQU}

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	2026-07-04T14:50:40.742237Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8847a11251591799586eb212948ad0850c40cef101f4316e6af278b08ff8fa64

Aliases

arxiv: physics/0508124 · arxiv_version: physics/0508124v2 · doi: 10.48550/arxiv.physics/0508124 · pith_short_12: RBD2CESRLELZ · pith_short_16: RBD2CESRLELZSWDO · pith_short_8: RBD2CESR

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/RBD2CESRLELZSWDOWIJJJCWQQU \
  | 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: 8847a11251591799586eb212948ad0850c40cef101f4316e6af278b08ff8fa64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26e4b6d160eace94170ac5f2499338d0191179ca056b8a6b0ef668cb3e06aa75",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2005-08-18T15:01:26Z",
    "title_canon_sha256": "01cb30189677e6923cbdfe0c8466869769c1dc6de8031c24f10f4e9cc3e2fe5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0508124",
    "kind": "arxiv",
    "version": 2
  }
}