Pith Number

pith:NT3S2AM7

pith:1995:NT3S2AM7HT5M5NMJZ72JKKEANX

not attested not anchored not stored refs pending

$R + R^2$ Gravity as $R +$ Backreaction

J.H. Kung

arxiv:gr-qc/9509058 v1 · 1995-09-30 · 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{NT3S2AM7HT5M5NMJZ72JKKEANX}

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	2026-05-18T01:06:44.782688Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cf72d019f3cfaceb589cff49528806dc1de7fbd779967473be96f348e9ac387

Aliases

arxiv: gr-qc/9509058 · arxiv_version: gr-qc/9509058v1 · doi: 10.48550/arxiv.gr-qc/9509058 · pith_short_12: NT3S2AM7HT5M · pith_short_16: NT3S2AM7HT5M5NMJ · pith_short_8: NT3S2AM7

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/NT3S2AM7HT5M5NMJZ72JKKEANX \
  | 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: 6cf72d019f3cfaceb589cff49528806dc1de7fbd779967473be96f348e9ac387

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76de6c1c67260780e7dab3615f0abc897e07fdc45fd90837875fe91e79745319",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1995-09-30T04:18:57Z",
    "title_canon_sha256": "442dc75d825775f31d8a730152569092a1db9f0a727d53873f685c5764e4990d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9509058",
    "kind": "arxiv",
    "version": 1
  }
}