Pith Number

pith:IWBTNAQ3

pith:2011:IWBTNAQ3JITS7NJEFWR6GGJAV4

not attested not anchored not stored refs pending

Generalized packing designs

Andrea C. Burgess, Robert F. Bailey

arxiv:1107.4120 v2 · 2011-07-20 · 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{IWBTNAQ3JITS7NJEFWR6GGJAV4}

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	2026-05-18T04:08:13.785176Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

458336821b4a272fb5242da3e31920af19b84c1a243ecd9281b229b7bb5a510a

Aliases

arxiv: 1107.4120 · arxiv_version: 1107.4120v2 · doi: 10.48550/arxiv.1107.4120 · pith_short_12: IWBTNAQ3JITS · pith_short_16: IWBTNAQ3JITS7NJE · pith_short_8: IWBTNAQ3

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/IWBTNAQ3JITS7NJEFWR6GGJAV4 \
  | 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: 458336821b4a272fb5242da3e31920af19b84c1a243ecd9281b229b7bb5a510a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b22a0ef2f99d514ffe59ba29027e070307072231cd4c087a6477c8bd85f473a4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-07-20T21:14:03Z",
    "title_canon_sha256": "e2628571f7ef99539d7f4c933c6a1f0a8cac6d90e0c91073390f3c9c7dd856b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.4120",
    "kind": "arxiv",
    "version": 2
  }
}