Pith Number

pith:2QTNBUIJ

pith:2010:2QTNBUIJZWDCPS7WWNL5TMCCD6

not attested not anchored not stored refs pending

Classification of base sequences BS(n+1,n)

Dragomir Z. Djokovic

arxiv:1002.1414 v3 · 2010-02-06 · 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{2QTNBUIJZWDCPS7WWNL5TMCCD6}

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	2026-05-18T04:39:38.971556Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d426d0d109cd8627cbf6b357d9b0421f857d473037f9f693ba2ee65200a91c96

Aliases

arxiv: 1002.1414 · arxiv_version: 1002.1414v3 · doi: 10.48550/arxiv.1002.1414 · pith_short_12: 2QTNBUIJZWDC · pith_short_16: 2QTNBUIJZWDCPS7W · pith_short_8: 2QTNBUIJ

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/2QTNBUIJZWDCPS7WWNL5TMCCD6 \
  | 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: d426d0d109cd8627cbf6b357d9b0421f857d473037f9f693ba2ee65200a91c96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04351a0d94953d0b1e6c49e6adbb6ccc0a5be07b516b8bb9be69bf75c04a17c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-02-06T20:53:34Z",
    "title_canon_sha256": "ae570f88607f6847fa969a56c76abe3db0030d01da9d41483079b41a4bf8783b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.1414",
    "kind": "arxiv",
    "version": 3
  }
}