Pith Number

pith:OPGZ5C66

pith:2009:OPGZ5C66ISF4IH2446NCEOURI2

not attested not anchored not stored refs pending

Semi-classical Universe Near Initial Singularity

V. E. Kuzmichev, V. V. Kuzmichev (Bogolyubov Institute for Theoretical Physics)

arxiv:0905.4142 v1 · 2009-05-26 · gr-qc · astro-ph.CO · quant-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{OPGZ5C66ISF4IH2446NCEOURI2}

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.

Cited by

1 paper in Pith

Cosmology with the matter component decaying faster than radiation

Receipt and verification

First computed	2026-07-04T17:27:35.201453Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73cd9e8bde448bc41f5ce79a223a9146916096b1d58d8c2138f874f7779b52eb

Aliases

arxiv: 0905.4142 · arxiv_version: 0905.4142v1 · doi: 10.48550/arxiv.0905.4142 · pith_short_12: OPGZ5C66ISF4 · pith_short_16: OPGZ5C66ISF4IH24 · pith_short_8: OPGZ5C66

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/OPGZ5C66ISF4IH2446NCEOURI2 \
  | 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: 73cd9e8bde448bc41f5ce79a223a9146916096b1d58d8c2138f874f7779b52eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "842eb6eef6d95b27c50e172a816f96ef92b6ec4b405d91e5a33989dd60ee3ddb",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-05-26T09:09:17Z",
    "title_canon_sha256": "ba4f85419bd1affa053cc098ab6d7d794cbe410a509fb35b7d0c662edda07c8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4142",
    "kind": "arxiv",
    "version": 1
  }
}