Pith Number

pith:4GCW64YQ

pith:2017:4GCW64YQ4AEWDBG4XGKPQL6KJG

not attested not anchored not stored refs pending

Constructions for orthogonal designs using signed group orthogonal designs

Ebrahim Ghaderpour

arxiv:1709.02806 v1 · 2017-09-08 · 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{4GCW64YQ4AEWDBG4XGKPQL6KJG}

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	2026-05-18T00:35:40.440767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1856f7310e0096184dcb994f82fca49880898e88f62b02cdb2729a9292dfd12

Aliases

arxiv: 1709.02806 · arxiv_version: 1709.02806v1 · doi: 10.48550/arxiv.1709.02806 · pith_short_12: 4GCW64YQ4AEW · pith_short_16: 4GCW64YQ4AEWDBG4 · pith_short_8: 4GCW64YQ

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/4GCW64YQ4AEWDBG4XGKPQL6KJG \
  | 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: e1856f7310e0096184dcb994f82fca49880898e88f62b02cdb2729a9292dfd12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "325f2fd3f9a4483bcc2e6f62dd01cc09a859bb8839806487377bc7f977d06cbe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-09-08T16:06:45Z",
    "title_canon_sha256": "9fc497ff1f224c787cd226e017a38d7cf21d3290c9c17fb1a4d906556caa3eb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.02806",
    "kind": "arxiv",
    "version": 1
  }
}