Pith Number

pith:63X7BDES

pith:2011:63X7BDESWCEIN55NNJYBSNXZLO

not attested not anchored not stored refs pending

The D^{2k} R^4 Invariants of N=8 Supergravity

Daniel Z. Freedman, Erik Tonni

arxiv:1101.1672 v1 · 2011-01-09 · 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{63X7BDESWCEIN55NNJYBSNXZLO}

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	2026-05-18T04:24:43.617362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6eff08c92b08886f7ad6a701936f95b9375dccf3900008819633d1826a63700

Aliases

arxiv: 1101.1672 · arxiv_version: 1101.1672v1 · doi: 10.48550/arxiv.1101.1672 · pith_short_12: 63X7BDESWCEI · pith_short_16: 63X7BDESWCEIN55N · pith_short_8: 63X7BDES

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/63X7BDESWCEIN55NNJYBSNXZLO \
  | 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: f6eff08c92b08886f7ad6a701936f95b9375dccf3900008819633d1826a63700

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51ccad6bbf1e9e49e1deeb214b8483e58bfabdb894c8c7b5abb252d347a8e466",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2011-01-09T20:36:19Z",
    "title_canon_sha256": "c0093b4e6349012173380c13825e7a97a1efd26bbfb035f7dfeaa431de69185b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1672",
    "kind": "arxiv",
    "version": 1
  }
}