Pith Number

pith:OCLT6Q3Z

pith:2020:OCLT6Q3ZKW7RPXSHHDVMIJ7WTC

not attested not anchored not stored refs pending

Spherically symmetric and static solutions in $f(R)$ gravity coupled with EM fields

Jose R. Arenas, Roger A. Hurtado

arxiv:2002.06059 v1 · 2020-02-14 · 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{OCLT6Q3ZKW7RPXSHHDVMIJ7WTC}

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.

Cited by

1 paper in Pith

Horizon-regular cross-focusing and inner-horizon obstructions in spherical f(R) gravity

Receipt and verification

First computed	2026-07-05T01:52:16.265620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70973f437955bf17de4738eac427f698b08d0d0726a63194aa670cee4ef8dffb

Aliases

arxiv: 2002.06059 · arxiv_version: 2002.06059v1 · doi: 10.48550/arxiv.2002.06059 · pith_short_12: OCLT6Q3ZKW7R · pith_short_16: OCLT6Q3ZKW7RPXSH · pith_short_8: OCLT6Q3Z

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/OCLT6Q3ZKW7RPXSHHDVMIJ7WTC \
  | 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: 70973f437955bf17de4738eac427f698b08d0d0726a63194aa670cee4ef8dffb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb4aabfcea441369b8c66c4f44db089ad7748f9f195d3e85a6ab50620fb9825d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-02-14T14:46:39Z",
    "title_canon_sha256": "5b7d403f17faa1f2f7d3dddc3483d7b49e9cc8d6f4d41be3c251307ced909f86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.06059",
    "kind": "arxiv",
    "version": 1
  }
}