Pith Number

pith:NGGJYVLM

pith:2010:NGGJYVLM5JYA2O6VJAZFLELU42

not attested not anchored not stored refs pending

Horizons and singularity in Clifton's spherical solution of f(R) vacuum

Valerio Faraoni (Bishop's University)

arxiv:1005.5397 v1 · 2010-05-28 · 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{NGGJYVLM5JYA2O6VJAZFLELU42}

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	2026-05-18T02:07:06.662132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

698c9c556cea700d3bd54832559174e6a30123d8f1c9d02a803f5c2e9ed7f2d6

Aliases

arxiv: 1005.5397 · arxiv_version: 1005.5397v1 · doi: 10.48550/arxiv.1005.5397 · pith_short_12: NGGJYVLM5JYA · pith_short_16: NGGJYVLM5JYA2O6V · pith_short_8: NGGJYVLM

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/NGGJYVLM5JYA2O6VJAZFLELU42 \
  | 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: 698c9c556cea700d3bd54832559174e6a30123d8f1c9d02a803f5c2e9ed7f2d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f82faf3c97a7b8100e2afea5827ba2a0b8180983dc81eb69315cea398330ef34",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2010-05-28T20:35:56Z",
    "title_canon_sha256": "dc3419478bf7ab3559a3ef55102a31bcf20a98ad3af98b1d19c35298327a8881"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.5397",
    "kind": "arxiv",
    "version": 1
  }
}