Pith Number

pith:YRLMFBSZ

pith:2026:YRLMFBSZE26KTPHDY4TCA43HSG

not attested not anchored not stored refs pending

Optimal Combinatorial Testing with Constraints: The Balancing Act

Changkun Guan, Hunter Gehman, John Hooker, Marcel Schoppers, Mikey Ferguson, Sumit Dhar, Thiago Serra

arxiv:2607.17083 v1 · 2026-07-19 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YRLMFBSZE26KTPHDY4TCA43HSG}

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	2026-07-21T01:21:14.024888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c456c2865926bca9bce3c72620736791b4cd3a681f5224d6fbd2fbeb6e4e0517

Aliases

arxiv: 2607.17083 · arxiv_version: 2607.17083v1 · doi: 10.48550/arxiv.2607.17083 · pith_short_12: YRLMFBSZE26K · pith_short_16: YRLMFBSZE26KTPHD · pith_short_8: YRLMFBSZ

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/YRLMFBSZE26KTPHDY4TCA43HSG \
  | 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: c456c2865926bca9bce3c72620736791b4cd3a681f5224d6fbd2fbeb6e4e0517

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb6e11d0501ff1a26d53c18d2783a0fafcd759d9b7bb3eae51080236c386a4eb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2026-07-19T05:26:41Z",
    "title_canon_sha256": "f727e7d57c8ed963d55540ffe98f77ae5643621f96a7aafeeb1d34aa29db4d9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.17083",
    "kind": "arxiv",
    "version": 1
  }
}