Pith Number

pith:DERGOAZ2

pith:2008:DERGOAZ2TUXDNFJLFJFKOBPW5Q

not attested not anchored not stored refs pending

Palatini versus metric formulation in higher curvature gravity

Bert Janssen, Mar Bastero-Gil, Monica Borunda

arxiv:0804.4440 v2 · 2008-04-28 · 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{DERGOAZ2TUXDNFJLFJFKOBPW5Q}

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.

Cited by

1 paper in Pith

Modified Gravity and Cosmology

Receipt and verification

First computed	2026-07-04T15:34:06.701313Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

192267033a9d2e36952b2a4aa705f6ec2a7e33667621f5f34f42c00410ecb9a6

Aliases

arxiv: 0804.4440 · arxiv_version: 0804.4440v2 · doi: 10.48550/arxiv.0804.4440 · pith_short_12: DERGOAZ2TUXD · pith_short_16: DERGOAZ2TUXDNFJL · pith_short_8: DERGOAZ2

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/DERGOAZ2TUXDNFJLFJFKOBPW5Q \
  | 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: 192267033a9d2e36952b2a4aa705f6ec2a7e33667621f5f34f42c00410ecb9a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6110b7852a9e8563cda66d533dd8b3ad5ecb3ddd08dff98b162ed297d951548d",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2008-04-28T16:24:59Z",
    "title_canon_sha256": "8ef2e05e58995fcde933cc4e1449be99cfc6b3aea11134deaa911d6f7a1657ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.4440",
    "kind": "arxiv",
    "version": 2
  }
}