Pith Number

pith:FYEU4L4X

pith:2016:FYEU4L4XHDX3EBSCTMZVRUIUWE

not attested not anchored not stored refs pending

Simulations on the combinatorial structure of D-optimal designs

Fabio Rapallo, Roberto Fontana

arxiv:1604.04582 v1 · 2016-04-15 · stat.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{FYEU4L4XHDX3EBSCTMZVRUIUWE}

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	2026-05-18T01:17:01.770483Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e094e2f9738efb206429b3358d114b128ae6f51e8b74c5462e6ff38b97bddae

Aliases

arxiv: 1604.04582 · arxiv_version: 1604.04582v1 · doi: 10.48550/arxiv.1604.04582 · pith_short_12: FYEU4L4XHDX3 · pith_short_16: FYEU4L4XHDX3EBSC · pith_short_8: FYEU4L4X

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/FYEU4L4XHDX3EBSCTMZVRUIUWE \
  | 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: 2e094e2f9738efb206429b3358d114b128ae6f51e8b74c5462e6ff38b97bddae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a540236976b1a34f42017312a9c0ca1b6ecff53bf53fedbea0a24192fd61f8bf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2016-04-15T17:41:37Z",
    "title_canon_sha256": "35e4cf3ddbe4483782e8735781120f168f91e7142ac1bc8461bb5d08c98baa21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.04582",
    "kind": "arxiv",
    "version": 1
  }
}