Pith Number

pith:I5F5VHIE

pith:2017:I5F5VHIEC6HUXPKJ3JUPY2JRAF

not attested not anchored not stored refs pending

A note on the cosmological constant in f(R) gravity

Peter K.F. Kuhfittig

arxiv:1705.09968 v2 · 2017-05-28 · 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{I5F5VHIEC6HUXPKJ3JUPY2JRAF}

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	2026-05-18T00:42:34.681456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

474bda9d04178f4bbd49da68fc693101558ffa3110f50864da39ea4e1b0b7191

Aliases

arxiv: 1705.09968 · arxiv_version: 1705.09968v2 · doi: 10.48550/arxiv.1705.09968 · pith_short_12: I5F5VHIEC6HU · pith_short_16: I5F5VHIEC6HUXPKJ · pith_short_8: I5F5VHIE

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/I5F5VHIEC6HUXPKJ3JUPY2JRAF \
  | 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: 474bda9d04178f4bbd49da68fc693101558ffa3110f50864da39ea4e1b0b7191

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4a7b127fa6587b353200bc7d3e859d811407f426c4cd3a454ada08e556d86ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-05-28T17:46:04Z",
    "title_canon_sha256": "b2552966923874b7ff8292ef1dd80d628b836df349e985c7b707300f7cd3bd0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.09968",
    "kind": "arxiv",
    "version": 2
  }
}