Pith Number

pith:BKNT67MQ

pith:2009:BKNT67MQDPNMZNUPYAFBX7EZSX

not attested not anchored not stored refs pending

Connectivity of chamber graphs of buildings and related complexes

Anders Bj\"orner, Kathrin Vorwerk

arxiv:0907.0325 v1 · 2009-07-02 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BKNT67MQDPNMZNUPYAFBX7EZSX}

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	2026-05-18T03:50:34.371551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a9b3f7d901bdaccb68fc00a1bfc9995f553ee198bf49c0cfd586fc3d6cfd616

Aliases

arxiv: 0907.0325 · arxiv_version: 0907.0325v1 · doi: 10.48550/arxiv.0907.0325 · pith_short_12: BKNT67MQDPNM · pith_short_16: BKNT67MQDPNMZNUP · pith_short_8: BKNT67MQ

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/BKNT67MQDPNMZNUPYAFBX7EZSX \
  | 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: 0a9b3f7d901bdaccb68fc00a1bfc9995f553ee198bf49c0cfd586fc3d6cfd616

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfd15e23bbe074cfaea60d9b6d5f2f8e26edf00d6f8dda7272b66eb052bddb48",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-07-02T09:53:45Z",
    "title_canon_sha256": "1a46adec88a106463aabc353fe416ee79fcb020cf6333f6d4e8868647eb0d439"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0325",
    "kind": "arxiv",
    "version": 1
  }
}