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Pith Number

pith:BONL3RAG

pith:2013:BONL3RAGIV5YVRI6F4PPOAOCER
not attested not anchored not stored refs pending

Friedmann-like solutions with a non-vanishing Weyl tensor

E. Bittencourt, J. M. Salim

arxiv:1301.3079 v2 · 2013-01-10 · physics.gen-ph

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{BONL3RAGIV5YVRI6F4PPOAOCER}

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 2026-05-18T03:13:10.543563Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

0b9abdc406457b8ac51e2f1ef701c22452fdc5dac12541fd104cd1a8524c9a7c

Aliases

arxiv: 1301.3079 · arxiv_version: 1301.3079v2 · doi: 10.48550/arxiv.1301.3079 · pith_short_12: BONL3RAGIV5Y · pith_short_16: BONL3RAGIV5YVRI6 · pith_short_8: BONL3RAG
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/BONL3RAGIV5YVRI6F4PPOAOCER \
  | 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: 0b9abdc406457b8ac51e2f1ef701c22452fdc5dac12541fd104cd1a8524c9a7c
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "f61bbcbb1cb5970dcd628a3839535cb0afb4622137c1c34db27380fe1edd2ba7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2013-01-10T21:24:03Z",
    "title_canon_sha256": "aa3cb1bace9d9f7af4e8192e65c545c38442b28341464b01473f5f39231c0680"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.3079",
    "kind": "arxiv",
    "version": 2
  }
}