Pith Number

pith:7BB2APQ7

pith:2014:7BB2APQ7LWJC7SQATML2G7SVFD

not attested not anchored not stored refs pending

Wormholes in viable $f(R)$ modified theories of gravity and Weak Energy Condition

Marko Sossich, Petar Pavlovi\'c

arxiv:1406.2509 v3 · 2014-06-10 · 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{7BB2APQ7LWJC7SQATML2G7SVFD}

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	2026-05-18T02:20:47.362986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f843a03e1f5d922fca009b17a37e5528f73ab17d75bf6dd61fb40279b55b2086

Aliases

arxiv: 1406.2509 · arxiv_version: 1406.2509v3 · doi: 10.48550/arxiv.1406.2509 · pith_short_12: 7BB2APQ7LWJC · pith_short_16: 7BB2APQ7LWJC7SQA · pith_short_8: 7BB2APQ7

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/7BB2APQ7LWJC7SQATML2G7SVFD \
  | 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: f843a03e1f5d922fca009b17a37e5528f73ab17d75bf6dd61fb40279b55b2086

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd88080872e08d17cf14f642525d40d0dfa88ffa61183b8fb8284d256d649ec3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-06-10T11:10:59Z",
    "title_canon_sha256": "d26218d9bc73ca780e600f98983aa49d8063cc0980a5d474b5277e78abd849d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.2509",
    "kind": "arxiv",
    "version": 3
  }
}