Pith Number

pith:UY55ODZI

pith:2009:UY55ODZILNNZMBXABSCEK6B7WH

not attested not anchored not stored refs pending

Fermion fields in Einstein-Cartan theory and the accelerated-decelerated transition in a primordial Universe

Gilberto M. Kremer, Marlos O. Ribas

arxiv:0902.2696 v2 · 2009-02-16 · 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{UY55ODZILNNZMBXABSCEK6B7WH}

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	2026-05-18T04:35:47.034595Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a63bd70f285b5b9606e00c8445783fb1f38147dd7ba1fa4efaab08b509b73b2e

Aliases

arxiv: 0902.2696 · arxiv_version: 0902.2696v2 · doi: 10.48550/arxiv.0902.2696 · pith_short_12: UY55ODZILNNZ · pith_short_16: UY55ODZILNNZMBXA · pith_short_8: UY55ODZI

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/UY55ODZILNNZMBXABSCEK6B7WH \
  | 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: a63bd70f285b5b9606e00c8445783fb1f38147dd7ba1fa4efaab08b509b73b2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10f9fd5f02bc64ff3f7260cb1a542b8cf1b4d2715ee5eab26b1194e4a1f7bd4b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-02-16T14:11:00Z",
    "title_canon_sha256": "db2db54a407dc10642fa004e5c42af272b8591d23cdff3e267bf8aebcbe2ad30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.2696",
    "kind": "arxiv",
    "version": 2
  }
}