Pith Number

pith:FPQSZDJM

pith:2011:FPQSZDJMSLWASS35PM53BA4KFQ

not attested not anchored not stored refs pending

Stability of Schwarzschild-like solutions in f(R,G) gravity models

Antonio De Felice, Takahiro Tanaka, Teruaki Suyama

arxiv:1102.1521 v1 · 2011-02-08 · 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{FPQSZDJMSLWASS35PM53BA4KFQ}

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	2026-05-18T04:20:58.855404Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2be12c8d2c92ec094b7d7b3bb0838a2c11082cbf060562b86d3f0565b32f307b

Aliases

arxiv: 1102.1521 · arxiv_version: 1102.1521v1 · doi: 10.48550/arxiv.1102.1521 · pith_short_12: FPQSZDJMSLWA · pith_short_16: FPQSZDJMSLWASS35 · pith_short_8: FPQSZDJM

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/FPQSZDJMSLWASS35PM53BA4KFQ \
  | 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: 2be12c8d2c92ec094b7d7b3bb0838a2c11082cbf060562b86d3f0565b32f307b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3eb4b27792a90b600d6ac24982b98fba298595813943f73c2053b12ec8573e90",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2011-02-08T07:24:28Z",
    "title_canon_sha256": "1c1220c5d7b0443d7b9db74768dc62504891b1c2172c9ce94951ae54f6032b05"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.1521",
    "kind": "arxiv",
    "version": 1
  }
}