Pith Number

pith:Y4JAX2BH

pith:2017:Y4JAX2BH4A66VPYVXLDWOCQLQG

not attested not anchored not stored refs pending

Weyl type N solutions with null electromagnetic fields in the Einstein-Maxwell $p$-form theory

Alena Pravdova, Martin Kuchynka

arxiv:1704.04827 v2 · 2017-04-16 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y4JAX2BH4A66VPYVXLDWOCQLQG}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:45:10.662047Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7120be827e03deabf15bac7670a0b81882b7ded2605b50aba1f239ac0bf7937

Aliases

arxiv: 1704.04827 · arxiv_version: 1704.04827v2 · doi: 10.48550/arxiv.1704.04827 · pith_short_12: Y4JAX2BH4A66 · pith_short_16: Y4JAX2BH4A66VPYV · pith_short_8: Y4JAX2BH

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/Y4JAX2BH4A66VPYVXLDWOCQLQG \
  | 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: c7120be827e03deabf15bac7670a0b81882b7ded2605b50aba1f239ac0bf7937

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "501a404fbdd2d8bcc21cb62e4512670e41d00b1a54c711662ba356143917fc98",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-04-16T22:11:12Z",
    "title_canon_sha256": "c51313771a536d843d6a309386d5f31d653c3d43ecc82c26ad1a40d98b05656b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.04827",
    "kind": "arxiv",
    "version": 2
  }
}