Pith Number

pith:5BDDDXSV

pith:2008:5BDDDXSVPUBOYF7BVWSCAV65MJ

not attested not anchored not stored refs pending

Embedding the bicyclic semigroup into countably compact topological semigroups

Oleg Gutik, Svetlana Dimitrova, Taras Banakh

arxiv:0811.4276 v3 · 2008-11-26 · math.GN · 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{5BDDDXSVPUBOYF7BVWSCAV65MJ}

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	2026-05-18T04:11:29.230445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e84631de557d02ec17e1ada42057dd627ea5bd8958d2427edde80bf06ff30a48

Aliases

arxiv: 0811.4276 · arxiv_version: 0811.4276v3 · doi: 10.48550/arxiv.0811.4276 · pith_short_12: 5BDDDXSVPUBO · pith_short_16: 5BDDDXSVPUBOYF7B · pith_short_8: 5BDDDXSV

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/5BDDDXSVPUBOYF7BVWSCAV65MJ \
  | 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: e84631de557d02ec17e1ada42057dd627ea5bd8958d2427edde80bf06ff30a48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9114b33e1d5b56afc5e5669e76603a38d04a586a442c73ff8277c852b5939025",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2008-11-26T11:24:09Z",
    "title_canon_sha256": "3ad95fc366b66df76f1351bf43422ea4b128a75f1220cd7d099e8ee50dd13649"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.4276",
    "kind": "arxiv",
    "version": 3
  }
}