Pith Number

pith:F3N7P2BF

pith:2015:F3N7P2BFJK6CZGT5ZMA75CDQWK

not attested not anchored not stored refs pending

Equivalent off-diagonal cosmological models and ekpyrotic scenarios in f(R)-modified, massive and Einstein gravity

Sergiu I. Vacaru

arxiv:1504.04346 v1 · 2015-04-15 · gr-qc · astro-ph.CO · math-ph · math.MP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F3N7P2BFJK6CZGT5ZMA75CDQWK}

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

Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution

Receipt and verification

First computed	2026-05-18T02:17:00.170097Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2edbf7e8254abc2c9a7dcb01fe8870b2800b50a8985122d79c066accb35cfd0d

Aliases

arxiv: 1504.04346 · arxiv_version: 1504.04346v1 · doi: 10.48550/arxiv.1504.04346 · pith_short_12: F3N7P2BFJK6C · pith_short_16: F3N7P2BFJK6CZGT5 · pith_short_8: F3N7P2BF

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/F3N7P2BFJK6CZGT5ZMA75CDQWK \
  | 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: 2edbf7e8254abc2c9a7dcb01fe8870b2800b50a8985122d79c066accb35cfd0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d060face4bb10be0e09049e1f4d3668467be79af53705abcd4e344c97741785c",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-04-15T12:46:29Z",
    "title_canon_sha256": "aa8973e6fd99ae5a97935e812c2416d497bc67d69d6b93faaf3d2e2b35c77931"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04346",
    "kind": "arxiv",
    "version": 1
  }
}