Pith Number

pith:GSBJ3DGZ

pith:2012:GSBJ3DGZ2FU4COYXS4UDQ6YSMC

not attested not anchored not stored refs pending

Automorphisms and opposition in twin buildings

Alice Devillers, Hendrik Van Maldeghem, James Parkinson

arxiv:1203.6172 v1 · 2012-03-28 · 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{GSBJ3DGZ2FU4COYXS4UDQ6YSMC}

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	2026-05-18T03:59:03.956139Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34829d8cd9d169c13b179728387b126081488e35f449486df5cf862f3abfeef9

Aliases

arxiv: 1203.6172 · arxiv_version: 1203.6172v1 · doi: 10.48550/arxiv.1203.6172 · pith_short_12: GSBJ3DGZ2FU4 · pith_short_16: GSBJ3DGZ2FU4COYX · pith_short_8: GSBJ3DGZ

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/GSBJ3DGZ2FU4COYXS4UDQ6YSMC \
  | 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: 34829d8cd9d169c13b179728387b126081488e35f449486df5cf862f3abfeef9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c73e960489d57ba4a50a2778efbef01c3612022d83176e5230c6e7ef7799ef03",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-03-28T06:09:08Z",
    "title_canon_sha256": "430b02302174817eaf950f3aa3c59c226a7feb8c8cab49ebb5933a131de14030"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.6172",
    "kind": "arxiv",
    "version": 1
  }
}