Pith Number

pith:Y45MU7HG

pith:2018:Y45MU7HGGTRX2ZP2NGGTPQ63VD

not attested not anchored not stored refs pending

Ghost-free higher order gravity from bi-gravity

Nima Khosravi, Reza Rajaee

arxiv:1807.08733 v1 · 2018-07-23 · 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{Y45MU7HGGTRX2ZP2NGGTPQ63VD}

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	2026-05-18T00:10:04.873892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c73aca7ce634e37d65fa698d37c3dba8d1e3427fa15ecf3543fcb79da3b1c997

Aliases

arxiv: 1807.08733 · arxiv_version: 1807.08733v1 · doi: 10.48550/arxiv.1807.08733 · pith_short_12: Y45MU7HGGTRX · pith_short_16: Y45MU7HGGTRX2ZP2 · pith_short_8: Y45MU7HG

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/Y45MU7HGGTRX2ZP2NGGTPQ63VD \
  | 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: c73aca7ce634e37d65fa698d37c3dba8d1e3427fa15ecf3543fcb79da3b1c997

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9cc21e1711e1809ae40905fb881f567ab5d7dc95b9cf33766bc20605f15067e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-07-23T17:31:09Z",
    "title_canon_sha256": "1ad9ac8865a9e09c4eff0a4a688360a222df506b1ac51b6f924cd48b138b67b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.08733",
    "kind": "arxiv",
    "version": 1
  }
}