Pith Number

pith:PFS3ULE4

pith:2009:PFS3ULE4T2EQLOCGIBBDEFVVWQ

not attested not anchored not stored refs pending

The Jeans Instability in Presence of Viscous Effects

Giovanni Montani, Nakia Carlevaro

arxiv:0907.0434 v2 · 2009-07-02 · gr-qc · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PFS3ULE4T2EQLOCGIBBDEFVVWQ}

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	2026-05-18T02:34:39.126339Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7965ba2c9c9e8905b84640423216b5b40558d12f7d948517a9213d36af75ad9b

Aliases

arxiv: 0907.0434 · arxiv_version: 0907.0434v2 · doi: 10.48550/arxiv.0907.0434 · pith_short_12: PFS3ULE4T2EQ · pith_short_16: PFS3ULE4T2EQLOCG · pith_short_8: PFS3ULE4

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/PFS3ULE4T2EQLOCGIBBDEFVVWQ \
  | 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: 7965ba2c9c9e8905b84640423216b5b40558d12f7d948517a9213d36af75ad9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b028c6bde593eee81a65fb7cb111620cfb15255ccdb07ce87b1918e93a2b99c9",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-07-02T16:37:53Z",
    "title_canon_sha256": "70351083eb8ad3b77e43b0d2551a7d9f8369d4f082e1887e9ca4f031aa0eed8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0434",
    "kind": "arxiv",
    "version": 2
  }
}