Pith Number

pith:IIOLABME

pith:2011:IIOLABMEMVLYIB2CBP7DIOJRLJ

not attested not anchored not stored refs pending

Explicit combinatorial design

Xiaoqing Tan, Xiongfeng Ma, Zhen Zhang

arxiv:1109.6147 v2 · 2011-09-28 · math.CO · cs.CC · cs.CR · cs.DM · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IIOLABMEMVLYIB2CBP7DIOJRLJ}

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	2026-05-18T03:36:48.237120Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

421cb0058465578407420bfe3439315a4537e40a21e8850e268719f44feca3cd

Aliases

arxiv: 1109.6147 · arxiv_version: 1109.6147v2 · doi: 10.48550/arxiv.1109.6147 · pith_short_12: IIOLABMEMVLY · pith_short_16: IIOLABMEMVLYIB2C · pith_short_8: IIOLABME

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/IIOLABMEMVLYIB2CBP7DIOJRLJ \
  | 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: 421cb0058465578407420bfe3439315a4537e40a21e8850e268719f44feca3cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf36f78a0f6d5527507ab656b32747492f888eae3399ade94c55fdb9080543e1",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.CR",
      "cs.DM",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-09-28T09:42:38Z",
    "title_canon_sha256": "0dd0d196eb223e01ad801893d59a057816d87ef73bb693d80fdb1c24e79af337"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.6147",
    "kind": "arxiv",
    "version": 2
  }
}