Pith Number

pith:D7XB7RGH

pith:2012:D7XB7RGHHYT7XFC5W775FEHC5G

not attested not anchored not stored refs pending

New Exact Solutions of Quadratic Curvature Gravity

Bayram Tekin, Metin Gurses, Tahsin Cagri Sisman

arxiv:1204.2215 v3 · 2012-04-10 · hep-th · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D7XB7RGHHYT7XFC5W775FEHC5G}

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	2026-05-18T03:51:00.226653Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fee1fc4c73e27fb945db7ffd290e2e99f9f873ea0d3cf4aa19d051cae0d22ee

Aliases

arxiv: 1204.2215 · arxiv_version: 1204.2215v3 · doi: 10.48550/arxiv.1204.2215 · pith_short_12: D7XB7RGHHYT7 · pith_short_16: D7XB7RGHHYT7XFC5 · pith_short_8: D7XB7RGH

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/D7XB7RGHHYT7XFC5W775FEHC5G \
  | 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: 1fee1fc4c73e27fb945db7ffd290e2e99f9f873ea0d3cf4aa19d051cae0d22ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f7c5848502f781c18d0b37bc81b7091912bdd953bfcb84b1ebea96f0621f4fe",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2012-04-10T16:42:58Z",
    "title_canon_sha256": "09190ff8863beec53b126693faea5bc341e54fa961bd92255b5c960fed6c0554"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.2215",
    "kind": "arxiv",
    "version": 3
  }
}