Pith Number

pith:CJE5HASH

pith:2018:CJE5HASHU6V7WEV7VDCFUJCZIB

not attested not anchored not stored refs pending

Null Hypersurfaces in de Sitter and anti-de Sitter Cosmologies

P. A. Hogan

arxiv:1801.02382 v1 · 2018-01-08 · 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{CJE5HASHU6V7WEV7VDCFUJCZIB}

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	2026-05-18T00:26:31.798681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1249d38247a7abfb12bfa8c45a24594077ad5d50fd40f2cf9acb588334001db3

Aliases

arxiv: 1801.02382 · arxiv_version: 1801.02382v1 · doi: 10.48550/arxiv.1801.02382 · pith_short_12: CJE5HASHU6V7 · pith_short_16: CJE5HASHU6V7WEV7 · pith_short_8: CJE5HASH

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/CJE5HASHU6V7WEV7VDCFUJCZIB \
  | 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: 1249d38247a7abfb12bfa8c45a24594077ad5d50fd40f2cf9acb588334001db3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "974bb6ac34ce357b3a58e3b1e3b72446a44b5e7f9eb752b87f24c8188e8b32cb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-01-08T11:07:48Z",
    "title_canon_sha256": "1673dd36f655fc75213356742cf0bb08a297d54b0d7d767ed656731f83460929"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.02382",
    "kind": "arxiv",
    "version": 1
  }
}