Pith Number

pith:ETP5Y7KV

pith:2025:ETP5Y7KVBHJXAYOGHFMH2SQHTQ

not attested not anchored not stored refs pending

A column generation approach to exact experimental design

Jacek Gondzio, Selin Ahipasaoglu, Stefano Cipolla

arxiv:2507.03210 v2 · 2025-07-03 · 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{ETP5Y7KVBHJXAYOGHFMH2SQHTQ}

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	2026-05-20T00:01:34.675009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24dfdc7d5509d37061c639587d4a079c2870fd2cfdec4aca4e4b90147ebf27f2

Aliases

arxiv: 2507.03210 · arxiv_version: 2507.03210v2 · doi: 10.48550/arxiv.2507.03210 · pith_short_12: ETP5Y7KVBHJX · pith_short_16: ETP5Y7KVBHJXAYOG · pith_short_8: ETP5Y7KV

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/ETP5Y7KVBHJXAYOGHFMH2SQHTQ \
  | 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: 24dfdc7d5509d37061c639587d4a079c2870fd2cfdec4aca4e4b90147ebf27f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efe9643f0704d2caf71568fec921623333de4ea4a35adfd65fba8e12630fd804",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2025-07-03T22:50:05Z",
    "title_canon_sha256": "8af91add9691348b682e309dbf41a79cdf58e499858bf1eda52d0ba4e936eab3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.03210",
    "kind": "arxiv",
    "version": 2
  }
}