Pith Number

pith:YTFFEHZ2

pith:2012:YTFFEHZ2HEQJKVHZ7DGDFIFVPJ

not attested not anchored not stored refs pending

Isoclinism and stable cohomology of wreath products

Christian B\"ohning, Fedor Bogomolov

arxiv:1204.4747 v1 · 2012-04-20 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YTFFEHZ2HEQJKVHZ7DGDFIFVPJ}

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	2026-05-18T03:57:15.425104Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4ca521f3a39209554f9f8cc32a0b57a655b36500756748ab096bcb3bf46923f

Aliases

arxiv: 1204.4747 · arxiv_version: 1204.4747v1 · doi: 10.48550/arxiv.1204.4747 · pith_short_12: YTFFEHZ2HEQJ · pith_short_16: YTFFEHZ2HEQJKVHZ · pith_short_8: YTFFEHZ2

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/YTFFEHZ2HEQJKVHZ7DGDFIFVPJ \
  | 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: c4ca521f3a39209554f9f8cc32a0b57a655b36500756748ab096bcb3bf46923f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "781319ab9bd1e2efd101775e08c0fd28e855c11fa0135d4cf725946d4e9e3bb8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-04-20T20:58:27Z",
    "title_canon_sha256": "56b5bb2924e05d88dcd748013bcb3657aed7dbc6496f871dd32041947425a4f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4747",
    "kind": "arxiv",
    "version": 1
  }
}