Pith Number

pith:LFG74QR6

pith:2014:LFG74QR6GL6CVZDX5SEEWCG2DS

not attested not anchored not stored refs pending

Free subgroups in group rings

Victor Bovdi

arxiv:1406.6771 v3 · 2014-06-26 · math.GR · math.RA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LFG74QR6GL6CVZDX5SEEWCG2DS}

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	2026-05-18T02:32:45.966792Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

594dfe423e32fc2ae477ec884b08da1c87fee4da4d0349614775fe67656c6d25

Aliases

arxiv: 1406.6771 · arxiv_version: 1406.6771v3 · doi: 10.48550/arxiv.1406.6771 · pith_short_12: LFG74QR6GL6C · pith_short_16: LFG74QR6GL6CVZDX · pith_short_8: LFG74QR6

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/LFG74QR6GL6CVZDX5SEEWCG2DS \
  | 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: 594dfe423e32fc2ae477ec884b08da1c87fee4da4d0349614775fe67656c6d25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58b9ead3c1b8ee7debf02ef625b815d450464704aff4e6da7b2a053aa7aba607",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2014-06-26T04:59:25Z",
    "title_canon_sha256": "624d90409332f1dfaa1bd23dc944c29a9f3f3f3d3873a0deff38d15431bc16ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.6771",
    "kind": "arxiv",
    "version": 3
  }
}