Pith Number

pith:OD5ARXR4

pith:2019:OD5ARXR4RGTCI5TCMDY3G77GFE

not attested not anchored not stored refs pending

Buchdahl model in f(R, T) gravity: A comparative study with standard Einstein's gravity

Ayan Banerjee, Francisco Tello-Ortiz, S. K. Maurya

arxiv:1907.05209 v2 · 2019-06-28 · physics.gen-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OD5ARXR4RGTCI5TCMDY3G77GFE}

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	2026-07-05T00:27:44.254158Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70fa08de3c89a624766260f1b37fe6293240e276dc4a5d9679ba2e3c90e4e7f3

Aliases

arxiv: 1907.05209 · arxiv_version: 1907.05209v2 · doi: 10.48550/arxiv.1907.05209 · pith_short_12: OD5ARXR4RGTC · pith_short_16: OD5ARXR4RGTCI5TC · pith_short_8: OD5ARXR4

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/OD5ARXR4RGTCI5TCMDY3G77GFE \
  | 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: 70fa08de3c89a624766260f1b37fe6293240e276dc4a5d9679ba2e3c90e4e7f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edbf93faf2b387a49f7b10f86a025f5603b879314bb350c74084e17b79c759e4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2019-06-28T13:32:19Z",
    "title_canon_sha256": "cd7ceeda2057e89005c009996f31a01788f1e15ce8ffc8b12f4c1241ad8fe1ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.05209",
    "kind": "arxiv",
    "version": 2
  }
}