Pith Number

pith:Y6Y6HTUZ

pith:2010:Y6Y6HTUZA43PYTLNZJN4XUXDXS

not attested not anchored not stored refs pending

Complexes and Exactness of certain Artin Groups

Erik Guentner, Graham A. Niblo

arxiv:1008.3925 v1 · 2010-08-23 · 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{Y6Y6HTUZA43PYTLNZJN4XUXDXS}

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	2026-05-18T04:41:54.499776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7b1e3ce990736fc4d6dca5bcbd2e3bc87b6559faa7710906438cc2491711a92

Aliases

arxiv: 1008.3925 · arxiv_version: 1008.3925v1 · doi: 10.48550/arxiv.1008.3925 · pith_short_12: Y6Y6HTUZA43P · pith_short_16: Y6Y6HTUZA43PYTLN · pith_short_8: Y6Y6HTUZ

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/Y6Y6HTUZA43PYTLNZJN4XUXDXS \
  | 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: c7b1e3ce990736fc4d6dca5bcbd2e3bc87b6559faa7710906438cc2491711a92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcf751887538253872c4b2dd1530ba66b9073c984f32306292f02cb5f87c07a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2010-08-23T21:42:47Z",
    "title_canon_sha256": "407b33bf36e1cdbfee8b5a1d0d27579f617bb3f3476ea53090ce3c980193c090"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.3925",
    "kind": "arxiv",
    "version": 1
  }
}