Pith Number

pith:LWB2RC6I

pith:2018:LWB2RC6IUMUA3LWKCRBKLPJ6Y5

not attested not anchored not stored refs pending

$q$-analogs of group divisible designs

Alfred Wassermann, Anamari Naki\'c, Marco Buratti, Michael Kiermaier, Sascha Kurz

arxiv:1804.11172 v2 · 2018-04-30 · 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{LWB2RC6IUMUA3LWKCRBKLPJ6Y5}

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	2026-05-17T23:52:24.430854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d83a88bc8a3280daeca1442a5bd3ec76bbbab748717005562fd94b7d223adb5

Aliases

arxiv: 1804.11172 · arxiv_version: 1804.11172v2 · doi: 10.48550/arxiv.1804.11172 · pith_short_12: LWB2RC6IUMUA · pith_short_16: LWB2RC6IUMUA3LWK · pith_short_8: LWB2RC6I

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/LWB2RC6IUMUA3LWKCRBKLPJ6Y5 \
  | 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: 5d83a88bc8a3280daeca1442a5bd3ec76bbbab748717005562fd94b7d223adb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1fed34a2b6bda6cce6003587fd064f582961ad9abf44c067cf80194eb7c90e7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-04-30T13:16:03Z",
    "title_canon_sha256": "946db6e451e9be929068dc432986875f1580b4afec9401aa875b12fd0217fc65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.11172",
    "kind": "arxiv",
    "version": 2
  }
}