Pith Number

pith:U72LSS3L

pith:2009:U72LSS3LJMSFODVCJ4W4SSUDXN

not attested not anchored not stored refs pending

Quantized fields and gravitational particle creation in f(R) expanding universes

C. H. G. Bessa, J. A. S. Lima, S. H. Pereira

arxiv:0911.0622 v1 · 2009-11-03 · astro-ph.CO · 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{U72LSS3LJMSFODVCJ4W4SSUDXN}

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	2026-05-18T04:19:04.498890Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7f4b94b6b4b24570ea24f2dc94a83bb6ebb883d3a1718aad9b188bbcfb72a6a

Aliases

arxiv: 0911.0622 · arxiv_version: 0911.0622v1 · doi: 10.48550/arxiv.0911.0622 · pith_short_12: U72LSS3LJMSF · pith_short_16: U72LSS3LJMSFODVC · pith_short_8: U72LSS3L

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/U72LSS3LJMSFODVCJ4W4SSUDXN \
  | 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: a7f4b94b6b4b24570ea24f2dc94a83bb6ebb883d3a1718aad9b188bbcfb72a6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fbbf94c3ea61841ef6a0510a68525b2ad35aaa8ab70405f769f98c005e6cb87",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-03T17:19:27Z",
    "title_canon_sha256": "d39584854918eb5615e0f20c1bad6762fbe1ad9c0bf0625d4cfa9744fdbdc8ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0622",
    "kind": "arxiv",
    "version": 1
  }
}