Pith Number

pith:OLMFFR4I

pith:2017:OLMFFR4IKSFUF3LBAFAPIJ2NHA

not attested not anchored not stored refs pending

Detecting a subclass of torsion-generated groups

Emily Stark

arxiv:1710.05684 v2 · 2017-10-16 · math.GT · 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{OLMFFR4IKSFUF3LBAFAPIJ2NHA}

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	2026-05-17T23:58:05.371380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72d852c788548b42ed610140f4274d383ea5a19a66fbd0ddafa2c9ca408549d9

Aliases

arxiv: 1710.05684 · arxiv_version: 1710.05684v2 · doi: 10.48550/arxiv.1710.05684 · pith_short_12: OLMFFR4IKSFU · pith_short_16: OLMFFR4IKSFUF3LB · pith_short_8: OLMFFR4I

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/OLMFFR4IKSFUF3LBAFAPIJ2NHA \
  | 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: 72d852c788548b42ed610140f4274d383ea5a19a66fbd0ddafa2c9ca408549d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24c087eb10f0d459a4b4f8e9de4972c8f0473bc023c4aaf9171ff7630d0011bf",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2017-10-16T13:31:16Z",
    "title_canon_sha256": "085aff4d347ceea322247f6f3e0d9fe59433c3bfe1b56fc19fdc71f52ac5a3fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.05684",
    "kind": "arxiv",
    "version": 2
  }
}