Pith Number

pith:FE4EJU3G

pith:2012:FE4EJU3GPPL4ZI6EMVJRRW56TK

not attested not anchored not stored refs pending

Cosmological dynamics of brane f(R) gravity

Hamid Reza Sepangi, Shahab Shahidi, Zahra Haghani

arxiv:1201.6448 v2 · 2012-01-31 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FE4EJU3GPPL4ZI6EMVJRRW56TK}

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	2026-05-18T03:16:17.628975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

293844d3667bd7cca3c4655318dbbe9a8f0ce01ee5e5c7f9046cd90d189841ea

Aliases

arxiv: 1201.6448 · arxiv_version: 1201.6448v2 · doi: 10.48550/arxiv.1201.6448 · pith_short_12: FE4EJU3GPPL4 · pith_short_16: FE4EJU3GPPL4ZI6E · pith_short_8: FE4EJU3G

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/FE4EJU3GPPL4ZI6EMVJRRW56TK \
  | 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: 293844d3667bd7cca3c4655318dbbe9a8f0ce01ee5e5c7f9046cd90d189841ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40167c51302fc8a4901ac483f496b6b00e35907b3685e64bf7acaa6b6552cd7e",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-01-31T05:07:02Z",
    "title_canon_sha256": "4ee991d3a3bddda01171b14aadf6f507f9aff87b84690a47077adf792248ce6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.6448",
    "kind": "arxiv",
    "version": 2
  }
}