Pith Number

pith:YRNXOZXM

pith:2017:YRNXOZXM2IAAWXSWY7A522OMTU

not attested not anchored not stored refs pending

Covariant electrodynamics in linear media: Optical metric

Robert T. Thompson

arxiv:1712.06872 v2 · 2017-12-19 · gr-qc · 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{YRNXOZXM2IAAWXSWY7A522OMTU}

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	2026-05-18T00:21:40.458342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c45b7766ecd2000b5e56c7c1dd69cc9d258501ab18dd1d107c3504088130fc65

Aliases

arxiv: 1712.06872 · arxiv_version: 1712.06872v2 · doi: 10.48550/arxiv.1712.06872 · pith_short_12: YRNXOZXM2IAA · pith_short_16: YRNXOZXM2IAAWXSW · pith_short_8: YRNXOZXM

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/YRNXOZXM2IAAWXSWY7A522OMTU \
  | 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: c45b7766ecd2000b5e56c7c1dd69cc9d258501ab18dd1d107c3504088130fc65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "486c764054a215ee07ed8d1bd93b6ac5e9907ddde340c1500b8294310904560c",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-12-19T11:31:22Z",
    "title_canon_sha256": "00056dce9dd5dffa16c2e4c3e48a20ecf2b98920cf4185252ac6822940c3360a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.06872",
    "kind": "arxiv",
    "version": 2
  }
}