Pith Number

pith:O2IXFKXH

pith:2014:O2IXFKXHRVBN6GVJGZIYIW23PZ

not attested not anchored not stored refs pending

Symmetry analysis of radiative spacetimes with a null isotropy using GHP formalism

Michael Bradley, M. Piedade Machado Ramos, S. Brian Edgar

arxiv:1406.7864 v1 · 2014-06-30 · 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{O2IXFKXHRVBN6GVJGZIYIW23PZ}

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	2026-05-18T01:36:04.067811Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

769172aae78d42df1aa93651845b5b7e741457c481dd6b9b6568d99b6ea951a7

Aliases

arxiv: 1406.7864 · arxiv_version: 1406.7864v1 · doi: 10.48550/arxiv.1406.7864 · pith_short_12: O2IXFKXHRVBN · pith_short_16: O2IXFKXHRVBN6GVJ · pith_short_8: O2IXFKXH

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/O2IXFKXHRVBN6GVJGZIYIW23PZ \
  | 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: 769172aae78d42df1aa93651845b5b7e741457c481dd6b9b6568d99b6ea951a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2b288a7720c6a9d8ce9804730315e5e9225d1f08181b0b03d0109e1d127fb80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-06-30T19:34:10Z",
    "title_canon_sha256": "68da89a966af991ec0dc789d1587ade283af8b2c314166ed39e79acf1c993924"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.7864",
    "kind": "arxiv",
    "version": 1
  }
}