Pith Number

pith:ALCBOFJX

pith:2018:ALCBOFJXZPN7YMSWHNRTQAZFV7

not attested not anchored not stored refs pending

Some rigidity results for II$_1$ factors arising from wreath products of property (T) groups

Bogdan Teodor Udrea, Ionut Chifan

arxiv:1804.04558 v1 · 2018-04-12 · math.OA · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ALCBOFJXZPN7YMSWHNRTQAZFV7}

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	2026-05-18T00:18:37.245188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

02c4171537cbdbfc32563b63380325afeb843f6c2b2199f97d8e2fb7450d45ef

Aliases

arxiv: 1804.04558 · arxiv_version: 1804.04558v1 · doi: 10.48550/arxiv.1804.04558 · pith_short_12: ALCBOFJXZPN7 · pith_short_16: ALCBOFJXZPN7YMSW · pith_short_8: ALCBOFJX

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/ALCBOFJXZPN7YMSWHNRTQAZFV7 \
  | 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: 02c4171537cbdbfc32563b63380325afeb843f6c2b2199f97d8e2fb7450d45ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc23c2ff529cc41bab3ce87bfa267e40d716b338e66cc27939854fb5d2ba0fbc",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2018-04-12T15:09:41Z",
    "title_canon_sha256": "6c4992e6c90db7f19e670f63b201ab23cd629617ebb0afcd215740acfc263924"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.04558",
    "kind": "arxiv",
    "version": 1
  }
}