Pith Number

pith:VGABP37H

pith:2004:VGABP37HGCWER7Y2LJK64JRJ7L

not attested not anchored not stored refs pending

Kink instability and stabilization of the Friedmann universe with scalar fields

Hideki Maeda, Tomohiro Harada

arxiv:gr-qc/0412040 v2 · 2004-12-09 · gr-qc · astro-ph · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VGABP37HGCWER7Y2LJK64JRJ7L}

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	2026-07-04T16:47:57.257221Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a98017efe730ac48ff1a5a55ee2629fad241e3208e17c8ec496e7a56286f2c64

Aliases

arxiv: gr-qc/0412040 · arxiv_version: gr-qc/0412040v2 · doi: 10.48550/arxiv.gr-qc/0412040 · pith_short_12: VGABP37HGCWE · pith_short_16: VGABP37HGCWER7Y2 · pith_short_8: VGABP37H

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/VGABP37HGCWER7Y2LJK64JRJ7L \
  | 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: a98017efe730ac48ff1a5a55ee2629fad241e3208e17c8ec496e7a56286f2c64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb1a07a61a225ee13fe0968dc4596928f6f5346bbd02c086e305cf1e5ac9e3a5",
    "cross_cats_sorted": [
      "astro-ph",
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2004-12-09T11:06:15Z",
    "title_canon_sha256": "813c4605c62a40af797bb87ef8d560724b072254eac2031c6eb0500fdf672465"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0412040",
    "kind": "arxiv",
    "version": 2
  }
}