Pith Number

pith:Y7RTSVGA

pith:2022:Y7RTSVGAAWJHJOQDAQPP7SSTPE

not attested not anchored not stored refs pending

Measure equivalence rigidity among the Higman groups

Camille Horbez, Jingyin Huang

arxiv:2206.00884 v3 · 2022-06-02 · math.GR · math.GT · 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{Y7RTSVGAAWJHJOQDAQPP7SSTPE}

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	2026-07-05T10:07:21.890691Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7e33954c0059274ba03041effca53790252e1937b444c242a7915dd6257776b

Aliases

arxiv: 2206.00884 · arxiv_version: 2206.00884v3 · doi: 10.48550/arxiv.2206.00884 · pith_short_12: Y7RTSVGAAWJH · pith_short_16: Y7RTSVGAAWJHJOQD · pith_short_8: Y7RTSVGA

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/Y7RTSVGAAWJHJOQDAQPP7SSTPE \
  | 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: c7e33954c0059274ba03041effca53790252e1937b444c242a7915dd6257776b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e833e8ece410694a19583d3903da7904b21bbc1d4f93e4ee067f3e8ee9b2ecb2",
    "cross_cats_sorted": [
      "math.GT",
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2022-06-02T05:56:09Z",
    "title_canon_sha256": "e16daed1afc5cac86c92ca96004ffd08c457ab61a0060d3881c1367c27f47335"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2206.00884",
    "kind": "arxiv",
    "version": 3
  }
}