Pith Number

pith:2WZTMXZI

pith:1997:2WZTMXZIDN4RZKCO6Y6AEARWKN

not attested not anchored not stored refs pending

Theorems on shear-free perfect fluids with their Newtonian analogues

Australia), C. F. Sopuerta (1), J. M. M. Senovilla (1), Mathematical Physics, P. Szekeres (2) ((1) Departament de Fisica Fonamental, Spain (2) Department of Physics, Universitat de Barcelona, University of Adelaide

arxiv:gr-qc/9702035 v1 · 1997-02-18 · 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{2WZTMXZIDN4RZKCO6Y6AEARWKN}

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	2026-05-18T04:34:17.558059Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5b3365f281b791ca84ef63c020236535338faafca59d56de2e215dcdda52cee

Aliases

arxiv: gr-qc/9702035 · arxiv_version: gr-qc/9702035v1 · doi: 10.48550/arxiv.gr-qc/9702035 · pith_short_12: 2WZTMXZIDN4R · pith_short_16: 2WZTMXZIDN4RZKCO · pith_short_8: 2WZTMXZI

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/2WZTMXZIDN4RZKCO6Y6AEARWKN \
  | 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: d5b3365f281b791ca84ef63c020236535338faafca59d56de2e215dcdda52cee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c536606b414d80a9d1b1609348194df397643a8b0e702bda1d34801e98e02dd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1997-02-18T17:58:25Z",
    "title_canon_sha256": "bc42ebbc16b898ea7e9e30f9be24358d86796db814afa58c3c36ce2c09dfae1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9702035",
    "kind": "arxiv",
    "version": 1
  }
}