Pith Number

pith:2FUSKFH2

pith:2020:2FUSKFH245DUAB5XXBYWMBWE4U

not attested not anchored not stored refs pending

FRW string cosmological solutions via Hojman symmetry

A. Rezaei-Aghdam, F. Darabi, M. Golmohammadi

arxiv:2001.04666 v2 · 2020-01-14 · 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{2FUSKFH245DUAB5XXBYWMBWE4U}

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	2026-07-05T01:43:24.207768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1692514fae7474007b7b8716606c4e51cddaa7abffb79741c893017f169ca98

Aliases

arxiv: 2001.04666 · arxiv_version: 2001.04666v2 · doi: 10.48550/arxiv.2001.04666 · pith_short_12: 2FUSKFH245DU · pith_short_16: 2FUSKFH245DUAB5X · pith_short_8: 2FUSKFH2

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/2FUSKFH245DUAB5XXBYWMBWE4U \
  | 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: d1692514fae7474007b7b8716606c4e51cddaa7abffb79741c893017f169ca98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33407ac7f6022c6f4b7a9d55d3fcaa09df357fe855171433b3ca9565794526fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-01-14T08:44:59Z",
    "title_canon_sha256": "a4168d67c17652dc66795de1bb46dadbf19ebab9151eb28d26a493409e4494fc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.04666",
    "kind": "arxiv",
    "version": 2
  }
}