Pith Number

pith:UCJPQ43U

pith:2009:UCJPQ43UGBYGFNZOYDDFVZBZTG

not attested not anchored not stored refs pending

Exponential Gravity

Eric V. Linder

arxiv:0905.2962 v2 · 2009-05-18 · astro-ph.CO · 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{UCJPQ43UGBYGFNZOYDDFVZBZTG}

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 Theories on a Nutshell: Inflation, Bounce and Late-time Evolution

Receipt and verification

First computed	2026-07-04T17:18:56.890146Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a092f87374307062b72ec0c65ae43999899f5be785e1fd9b74769502c53abac4

Aliases

arxiv: 0905.2962 · arxiv_version: 0905.2962v2 · doi: 10.48550/arxiv.0905.2962 · pith_short_12: UCJPQ43UGBYG · pith_short_16: UCJPQ43UGBYGFNZO · pith_short_8: UCJPQ43U

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/UCJPQ43UGBYGFNZOYDDFVZBZTG \
  | 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: a092f87374307062b72ec0c65ae43999899f5be785e1fd9b74769502c53abac4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62396c2603903eed461bddc2cee96704dbe95e45ee091c206440ce4188a271df",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-05-18T20:00:07Z",
    "title_canon_sha256": "29b746f6540377bef16e2945f46c7ca407fe3263414ddef51e45fffcdf68fcc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2962",
    "kind": "arxiv",
    "version": 2
  }
}