Pith Number

pith:LMHHMQ6Y

pith:2011:LMHHMQ6YDCBKIS6WBN4AVXO7CP

not attested not anchored not stored refs pending

Complex Orthogonal Designs with Forbidden $2 \times 2$ Submatrices

Haibin Kan, Yuan Li

arxiv:1107.3268 v2 · 2011-07-17 · cs.IT · cs.DM · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LMHHMQ6YDCBKIS6WBN4AVXO7CP}

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	2026-05-18T03:58:51.350786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b0e7643d81882a44bd60b780adddf13db2d8da8e7fe8662a8c4fda2ee4984d0

Aliases

arxiv: 1107.3268 · arxiv_version: 1107.3268v2 · doi: 10.48550/arxiv.1107.3268 · pith_short_12: LMHHMQ6YDCBK · pith_short_16: LMHHMQ6YDCBKIS6W · pith_short_8: LMHHMQ6Y

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/LMHHMQ6YDCBKIS6WBN4AVXO7CP \
  | 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: 5b0e7643d81882a44bd60b780adddf13db2d8da8e7fe8662a8c4fda2ee4984d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43f7b5beffc29bca4b0b8b2f1d383a2856ff304ac8226527af5f75268a1ce6c7",
    "cross_cats_sorted": [
      "cs.DM",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-07-17T01:18:46Z",
    "title_canon_sha256": "44d2efa97049de64916f65121ecd1a7ca4e7f48e67321924a1ca7edd1486a3e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.3268",
    "kind": "arxiv",
    "version": 2
  }
}