Pith Number

pith:EJYHNGWD

pith:2008:EJYHNGWDYHT3EQGZTC5Q4DND3X

not attested not anchored not stored refs pending

Polytropic spheres in Palatini f(R) gravity

Enrico Barausse, John C. Miller, Thomas P. Sotiriou

arxiv:0801.4852 v1 · 2008-01-31 · 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{EJYHNGWDYHT3EQGZTC5Q4DND3X}

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	2026-05-18T04:14:36.654603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2270769ac3c1e7b240d998bb0e0da3ddc5601a815502aea0c6c5327139bd97f2

Aliases

arxiv: 0801.4852 · arxiv_version: 0801.4852v1 · doi: 10.48550/arxiv.0801.4852 · pith_short_12: EJYHNGWDYHT3 · pith_short_16: EJYHNGWDYHT3EQGZ · pith_short_8: EJYHNGWD

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/EJYHNGWDYHT3EQGZTC5Q4DND3X \
  | 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: 2270769ac3c1e7b240d998bb0e0da3ddc5601a815502aea0c6c5327139bd97f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c5571a78572e5d4c196243a9978da29f2028eaa4836be9e98126bfe1d783eb7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2008-01-31T12:00:17Z",
    "title_canon_sha256": "fbf162e04f4c398e4f3ca12fbd7830fd6a46e4b34074b87359decbc8845f5c53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.4852",
    "kind": "arxiv",
    "version": 1
  }
}