Pith Number

pith:BLENB36C

pith:2009:BLENB36CJ4CB456LNUJQVZIRR2

not attested not anchored not stored refs pending

On the Baker's map and the Simplicity of the Higher Dimensional Thompson Groups nV

Matthew G. Brin

arxiv:0904.2624 v1 · 2009-04-17 · 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{BLENB36CJ4CB456LNUJQVZIRR2}

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	2026-05-18T03:14:27.134444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ac8d0efc24f041e77cb6d130ae5118eb11ea804f51962f1c7d84f7fe40afbce

Aliases

arxiv: 0904.2624 · arxiv_version: 0904.2624v1 · doi: 10.48550/arxiv.0904.2624 · pith_short_12: BLENB36CJ4CB · pith_short_16: BLENB36CJ4CB456L · pith_short_8: BLENB36C

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/BLENB36CJ4CB456LNUJQVZIRR2 \
  | 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: 0ac8d0efc24f041e77cb6d130ae5118eb11ea804f51962f1c7d84f7fe40afbce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80c9f4ae124c41040cafdec723067eb7e79430b5f95d143fc4ed1292c15c91ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2009-04-17T03:54:01Z",
    "title_canon_sha256": "709f14a2532947f58f2c8cc841926ad727091e03d0c0b2388efacced9f9d1168"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2624",
    "kind": "arxiv",
    "version": 1
  }
}