Pith Number

pith:SY56OPBK

pith:2019:SY56OPBKJ7KGXQQCGUOGIZMNW4

not attested not anchored not stored refs pending

Variable Chaplygin gas cosmologies in f(R, T) gravity with particle creation

A. Singh, Binaya K. Bishi, G. P. Singh, N. Hulke

arxiv:1904.10303 v1 · 2019-04-22 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SY56OPBKJ7KGXQQCGUOGIZMNW4}

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	2026-07-05T00:39:54.881414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

963be73c2a4fd46bc202351c64658db7345a12b3ec3e73fd5b8e67d0875b2704

Aliases

arxiv: 1904.10303 · arxiv_version: 1904.10303v1 · doi: 10.48550/arxiv.1904.10303 · pith_short_12: SY56OPBKJ7KG · pith_short_16: SY56OPBKJ7KGXQQC · pith_short_8: SY56OPBK

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/SY56OPBKJ7KGXQQCGUOGIZMNW4 \
  | 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: 963be73c2a4fd46bc202351c64658db7345a12b3ec3e73fd5b8e67d0875b2704

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e61e256b2cdff7173e2337bb97d9f79402dfe52e0bce61ea6bc7610cd59c7c0c",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-04-22T08:53:21Z",
    "title_canon_sha256": "90f67c252ef7e1f62491ab5380896ca97e4783fa2ad440fa98e4e520ad40cece"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.10303",
    "kind": "arxiv",
    "version": 1
  }
}