Pith Number

pith:6DQOESY5

pith:2019:6DQOESY5VODV77CJ6RXOWBRP6M

not attested not anchored not stored refs pending

The role of cosmological constant in f(R, G) gravity

Abhik Kumar Sanyal, Chandramouli Sarkar

arxiv:1908.05680 v1 · 2019-08-15 · 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{6DQOESY5VODV77CJ6RXOWBRP6M}

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	2026-07-04T23:57:52.374462Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0e0e24b1dab875ffc49f46eeb062ff326fda3c72dc7f5aff3c6a4358a1f049b

Aliases

arxiv: 1908.05680 · arxiv_version: 1908.05680v1 · doi: 10.48550/arxiv.1908.05680 · pith_short_12: 6DQOESY5VODV · pith_short_16: 6DQOESY5VODV77CJ · pith_short_8: 6DQOESY5

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/6DQOESY5VODV77CJ6RXOWBRP6M \
  | 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: f0e0e24b1dab875ffc49f46eeb062ff326fda3c72dc7f5aff3c6a4358a1f049b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4de8556537cdea68803ae7a4ac1201c928c2870e36a4f9e5c2559430b9d4dc6c",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-08-15T15:11:23Z",
    "title_canon_sha256": "5c08dd29552ca3964143afc3162844bbea9f0d0035427708537b55d0ac229751"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05680",
    "kind": "arxiv",
    "version": 1
  }
}