Pith Number

pith:PKPBS3BJ

pith:2013:PKPBS3BJ2TB35NCZ2ZWW54SOYT

not attested not anchored not stored refs pending

Disformal invariance of Maxwell's field equations

E. Goulart, F. T. Falciano

arxiv:1303.4350 v1 · 2013-03-18 · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PKPBS3BJ2TB35NCZ2ZWW54SOYT}

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	2026-05-18T03:18:20.063869Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a9e196c29d4c3beb459d66d6ef24ec4ffc557a9b654b9bc652384677418943c

Aliases

arxiv: 1303.4350 · arxiv_version: 1303.4350v1 · doi: 10.48550/arxiv.1303.4350 · pith_short_12: PKPBS3BJ2TB3 · pith_short_16: PKPBS3BJ2TB35NCZ · pith_short_8: PKPBS3BJ

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/PKPBS3BJ2TB35NCZ2ZWW54SOYT \
  | 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: 7a9e196c29d4c3beb459d66d6ef24ec4ffc557a9b654b9bc652384677418943c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "085ded0ff06d8d9a130c74cd8ff39fc193ffcd4fa0281dce4efd5f50efb04f28",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-03-18T18:22:53Z",
    "title_canon_sha256": "9114e648e96425882a345a0c306116684f146e333def3ebb02c29253d863040b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.4350",
    "kind": "arxiv",
    "version": 1
  }
}