Pith Number

pith:MVHB7RQB

pith:2017:MVHB7RQBW66VS6CUXEVV5WCGE6

not attested not anchored not stored refs pending

The complexity of conjugacy, orbit equivalence, and von Neumann equivalence of actions of nonamenable groups

Eusebio Gardella, Martino Lupini

arxiv:1708.01327 v2 · 2017-08-03 · math.DS · math.LO · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MVHB7RQBW66VS6CUXEVV5WCGE6}

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	2026-05-18T00:27:52.379074Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

654e1fc601b7bd597854b92b5ed84627b55a625777439730861c7e0270f15495

Aliases

arxiv: 1708.01327 · arxiv_version: 1708.01327v2 · doi: 10.48550/arxiv.1708.01327 · pith_short_12: MVHB7RQBW66V · pith_short_16: MVHB7RQBW66VS6CU · pith_short_8: MVHB7RQB

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/MVHB7RQBW66VS6CUXEVV5WCGE6 \
  | 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: 654e1fc601b7bd597854b92b5ed84627b55a625777439730861c7e0270f15495

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "698740503782ea6988768cc8c62f7c85d69aa8735c6a6b5e550288125a527752",
    "cross_cats_sorted": [
      "math.LO",
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2017-08-03T22:50:26Z",
    "title_canon_sha256": "17c37686b9aa72761ffde76828aa481f84e187636d95dcf6c65b1339946a107b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.01327",
    "kind": "arxiv",
    "version": 2
  }
}