Pith Number

pith:6NP5W7HW

pith:2012:6NP5W7HWDZZ7UIZRKIOJSTHQDS

not attested not anchored not stored refs pending

Necessary conditions for having wormholes in f(R) gravity

M. Halilsoy, S. Habib Mazharimousavi

arxiv:1209.2015 v2 · 2012-09-07 · 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{6NP5W7HWDZZ7UIZRKIOJSTHQDS}

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	2026-05-18T00:59:28.289429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f35fdb7cf61e73fa2331521c994cf01c8fb43b716fca1a7a00b8624c87045d70

Aliases

arxiv: 1209.2015 · arxiv_version: 1209.2015v2 · doi: 10.48550/arxiv.1209.2015 · pith_short_12: 6NP5W7HWDZZ7 · pith_short_16: 6NP5W7HWDZZ7UIZR · pith_short_8: 6NP5W7HW

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/6NP5W7HWDZZ7UIZRKIOJSTHQDS \
  | 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: f35fdb7cf61e73fa2331521c994cf01c8fb43b716fca1a7a00b8624c87045d70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab202a6861f48274276de77b11fe7e4ffdd26aeb7f157eac581e6e3a10c455d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-09-07T14:06:25Z",
    "title_canon_sha256": "850e50643a3402be14c88aadc99c8e40eedfb83de59fd9cf2258eed852078daa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.2015",
    "kind": "arxiv",
    "version": 2
  }
}