Pith Number

pith:MHOMXR2Y

pith:2010:MHOMXR2YLFILGYF7UWWX6VDE5N

not attested not anchored not stored refs pending

Momentum of electromagnetic fields, speed of light in moving media, and the photon mass

George T. Gillies, Gianfranco Spavieri

arxiv:1005.4082 v1 · 2010-05-21 · 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{MHOMXR2YLFILGYF7UWWX6VDE5N}

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	2026-05-18T02:07:15.538054Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61dccbc7585950b360bfa5ad7f5464eb52c7b0fa97d0f240b0a28ecd95791aba

Aliases

arxiv: 1005.4082 · arxiv_version: 1005.4082v1 · doi: 10.48550/arxiv.1005.4082 · pith_short_12: MHOMXR2YLFIL · pith_short_16: MHOMXR2YLFILGYF7 · pith_short_8: MHOMXR2Y

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/MHOMXR2YLFILGYF7UWWX6VDE5N \
  | 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: 61dccbc7585950b360bfa5ad7f5464eb52c7b0fa97d0f240b0a28ecd95791aba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8c838e2ccb044da532df601df09c5df0caf41207d89998ea27c677724c33eee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-05-21T21:18:08Z",
    "title_canon_sha256": "1b42aed36f97bdf00111afee4b70ba2ef0f2ae9929e4aedc0df121051b20cf23"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.4082",
    "kind": "arxiv",
    "version": 1
  }
}