Pith Number

pith:HNXX6PYV

pith:2012:HNXX6PYVJ4SHD434YXCWWVPUG4

not attested not anchored not stored refs pending

Reconstruction of $f(R)$, $f(T)$ and $f(\mathcal{G})$ models inspired by variable deceleration parameter

F. Darabi

arxiv:1207.0212 v3 · 2012-07-01 · 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{HNXX6PYVJ4SHD434YXCWWVPUG4}

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	2026-05-18T03:28:30.569599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b6f7f3f154f2471f37cc5c56b55f43722f1d1342f625129154e1cdd81408bef

Aliases

arxiv: 1207.0212 · arxiv_version: 1207.0212v3 · doi: 10.48550/arxiv.1207.0212 · pith_short_12: HNXX6PYVJ4SH · pith_short_16: HNXX6PYVJ4SHD434 · pith_short_8: HNXX6PYV

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/HNXX6PYVJ4SHD434YXCWWVPUG4 \
  | 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: 3b6f7f3f154f2471f37cc5c56b55f43722f1d1342f625129154e1cdd81408bef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d9050335aa3eda4c32290c61982e7ec22ee4b92977ad524dfc7cc48cfba1628",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-07-01T14:11:32Z",
    "title_canon_sha256": "f2519579330f7929f4a5ccb3d7c7f02f2a7e4d9dfed5528f843d3305aaccfcda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.0212",
    "kind": "arxiv",
    "version": 3
  }
}