Pith Number

pith:Z2SRUFCW

pith:2011:Z2SRUFCWTO4SO3O4GWVRC3NQ5V

not attested not anchored not stored refs pending

On the classifying space for proper actions of groups with cyclic torsion

Ram\'on Flores, Yago Antol\'in

arxiv:1107.0566 v2 · 2011-07-04 · math.KT · 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{Z2SRUFCWTO4SO3O4GWVRC3NQ5V}

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	2026-05-18T03:12:48.693939Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cea51a14569bb9276ddc35ab116db0ed7152281c6062ce4eb9db4360cab90ca6

Aliases

arxiv: 1107.0566 · arxiv_version: 1107.0566v2 · doi: 10.48550/arxiv.1107.0566 · pith_short_12: Z2SRUFCWTO4S · pith_short_16: Z2SRUFCWTO4SO3O4 · pith_short_8: Z2SRUFCW

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/Z2SRUFCWTO4SO3O4GWVRC3NQ5V \
  | 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: cea51a14569bb9276ddc35ab116db0ed7152281c6062ce4eb9db4360cab90ca6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "448c88955f1ab8275425bac35912f140d254e5babd2f1a0552da0ae9f0f73981",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2011-07-04T09:08:42Z",
    "title_canon_sha256": "a8499bdb2a726639c7bf2516daca9b3873a814a4898e83af0bce036fe3c597a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.0566",
    "kind": "arxiv",
    "version": 2
  }
}