Pith Number

pith:Q2PSI6QK

pith:2010:Q2PSI6QK2NKXMY2PNAVOMXBP4Y

not attested not anchored not stored refs pending

Completely reducible subcomplexes of spherical buildings

Chris Parker, Katrin Tent

arxiv:1009.5783 v2 · 2010-09-29 · 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{Q2PSI6QK2NKXMY2PNAVOMXBP4Y}

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	2026-05-18T04:29:44.420206Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

869f247a0ad35576634f682ae65c2fe62fc694ed3bd956cbe36825c473bd7d14

Aliases

arxiv: 1009.5783 · arxiv_version: 1009.5783v2 · doi: 10.48550/arxiv.1009.5783 · pith_short_12: Q2PSI6QK2NKX · pith_short_16: Q2PSI6QK2NKXMY2P · pith_short_8: Q2PSI6QK

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/Q2PSI6QK2NKXMY2PNAVOMXBP4Y \
  | 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: 869f247a0ad35576634f682ae65c2fe62fc694ed3bd956cbe36825c473bd7d14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6cac1af3ef6d0de5e5601b08e2cbc069730277256bc2522acd00d641d0645838",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2010-09-29T06:52:41Z",
    "title_canon_sha256": "2be333219a4ac9d9a225b3cc4e9db6504e43454e0328a31d5c4756518b6fc8c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.5783",
    "kind": "arxiv",
    "version": 2
  }
}