Pith Number

pith:YQKF4DHR

pith:2021:YQKF4DHRJ7NCNL5NJGL5GC3NQ6

not attested not anchored not stored refs pending

No-go theorem for inflation in an extended Ricci-inverse gravity model

Tuan Q. Do

arxiv:2101.08538 v3 · 2021-01-21 · gr-qc · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YQKF4DHRJ7NCNL5NJGL5GC3NQ6}

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	2026-07-05T03:46:57.191605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4145e0cf14fda26afad4997d30b6d8791b8465fd4514b2611918ee1dbcffd8c

Aliases

arxiv: 2101.08538 · arxiv_version: 2101.08538v3 · doi: 10.48550/arxiv.2101.08538 · pith_short_12: YQKF4DHRJ7NC · pith_short_16: YQKF4DHRJ7NCNL5N · pith_short_8: YQKF4DHR

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/YQKF4DHRJ7NCNL5NJGL5GC3NQ6 \
  | 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: c4145e0cf14fda26afad4997d30b6d8791b8465fd4514b2611918ee1dbcffd8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7174e9c1eaca112614b1eae6403f09afb09a7c1f20fb773a57902dd7dfa79df4",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-01-21T10:41:46Z",
    "title_canon_sha256": "47162919b80527d87988d371ce0cc8a5cad6c727f3081199d7c6cda6e981ff38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.08538",
    "kind": "arxiv",
    "version": 3
  }
}