Pith Number

pith:K3RBF36K

pith:2015:K3RBF36KJW3OZBO6PSAGYEGLT6

not attested not anchored not stored refs pending

Intricacies of Cosmological bounce in polynomial metric $f(R)$ gravity for flat FLRW spacetime

Kaushik Bhattacharya, Saikat Chakrabarty

arxiv:1509.01835 v2 · 2015-09-06 · gr-qc · astro-ph.CO · 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{K3RBF36KJW3OZBO6PSAGYEGLT6}

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	2026-05-18T01:20:34.323401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56e212efca4db6ec85de7c806c10cb9fa75c351f2051f9e78bbb9d945fbee611

Aliases

arxiv: 1509.01835 · arxiv_version: 1509.01835v2 · doi: 10.48550/arxiv.1509.01835 · pith_short_12: K3RBF36KJW3O · pith_short_16: K3RBF36KJW3OZBO6 · pith_short_8: K3RBF36K

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/K3RBF36KJW3OZBO6PSAGYEGLT6 \
  | 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: 56e212efca4db6ec85de7c806c10cb9fa75c351f2051f9e78bbb9d945fbee611

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d690698f6525880df3e3fb862c493ca3328fec46852dc61dae2840cbf7421b4",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-09-06T17:41:27Z",
    "title_canon_sha256": "e049087334f7d3795ab479e2699c45b02735ebd1c4a36d2a928f61697783fd6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01835",
    "kind": "arxiv",
    "version": 2
  }
}