Pith Number

pith:72XYW2DY

pith:2017:72XYW2DYFSDCPVO7VFVUJ5YCTI

not attested not anchored not stored refs pending

Anisotropic stars for spherically symmetric spacetimes satisfying the Karmarkar condition

B. S. Ratanpal, M. Govender, S. K. Maurya

arxiv:1703.01724 v2 · 2017-03-06 · 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{72XYW2DYFSDCPVO7VFVUJ5YCTI}

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	2026-05-18T00:43:53.931472Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

feaf8b68782c8627d5dfa96b44f7029a1e7e3519932cd26ac282feb5c5eb6e1a

Aliases

arxiv: 1703.01724 · arxiv_version: 1703.01724v2 · doi: 10.48550/arxiv.1703.01724 · pith_short_12: 72XYW2DYFSDC · pith_short_16: 72XYW2DYFSDCPVO7 · pith_short_8: 72XYW2DY

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/72XYW2DYFSDCPVO7VFVUJ5YCTI \
  | 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: feaf8b68782c8627d5dfa96b44f7029a1e7e3519932cd26ac282feb5c5eb6e1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75811595f5a51cc74e0541c68cff83aec4700e8095af929aa884e956e99e2074",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-03-06T04:52:34Z",
    "title_canon_sha256": "015aa457e5d0655e1a143befa4552b209dd623742fb96dd0ce0d05d56630c1d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.01724",
    "kind": "arxiv",
    "version": 2
  }
}