Pith Number

pith:HU4RCOSV

pith:2013:HU4RCOSV2V7E6FIRCDIKKILLI2

not attested not anchored not stored refs pending

Anisotropic Universe Models with Perfect Fluid and Scalar Field in f(R,T) Gravity

Muhammad Sharif, Muhammad Zubair

arxiv:1301.2251 v1 · 2013-01-10 · 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{HU4RCOSV2V7E6FIRCDIKKILLI2}

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	2026-05-18T01:52:13.720786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d39113a55d57e4f151110d0a5216b468f17afabfbfc391813af1e57fa020667

Aliases

arxiv: 1301.2251 · arxiv_version: 1301.2251v1 · doi: 10.48550/arxiv.1301.2251 · pith_short_12: HU4RCOSV2V7E · pith_short_16: HU4RCOSV2V7E6FIR · pith_short_8: HU4RCOSV

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/HU4RCOSV2V7E6FIRCDIKKILLI2 \
  | 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: 3d39113a55d57e4f151110d0a5216b468f17afabfbfc391813af1e57fa020667

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74f91a590ec3c78ffa20f2ab9b1590ab83143dd88035c3101c19bc8cc9ff6a71",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-01-10T04:08:44Z",
    "title_canon_sha256": "bd6a64599a23ecd7c0c4a60cb67dfa747ffe3bfabd6d2f41f2c1c63f03a88427"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.2251",
    "kind": "arxiv",
    "version": 1
  }
}