Pith Number

pith:4X72NZSU

pith:2016:4X72NZSU43FXBOSQGX4MJGOCA3

not attested not anchored not stored refs pending

Implications of extreme flatness in a general f(R) theory

Marek Lewicki, Michal Artymowski, Zygmunt Lalak

arxiv:1604.02470 v2 · 2016-04-08 · hep-th · 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{4X72NZSU43FXBOSQGX4MJGOCA3}

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	2026-05-18T01:10:49.942250Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5ffa6e654e6cb70ba5035f8c499c206d86fcbeb336b544f420aa3decc908214

Aliases

arxiv: 1604.02470 · arxiv_version: 1604.02470v2 · doi: 10.48550/arxiv.1604.02470 · pith_short_12: 4X72NZSU43FX · pith_short_16: 4X72NZSU43FXBOSQ · pith_short_8: 4X72NZSU

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/4X72NZSU43FXBOSQGX4MJGOCA3 \
  | 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: e5ffa6e654e6cb70ba5035f8c499c206d86fcbeb336b544f420aa3decc908214

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e795f8812deb7cfdffd7202f894ab6b96147b681fb0d74e76fec63479ea6dc3",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2016-04-08T20:21:37Z",
    "title_canon_sha256": "5b02aefdef503684450e71a6990b109c75c3ac246c537f5dc9b73e3576d86555"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.02470",
    "kind": "arxiv",
    "version": 2
  }
}