Pith Number

pith:5CU4HYWB

pith:2026:5CU4HYWBL5BHMZMVEZW7ROS4PC

not attested not anchored not stored refs pending

Incomplete Matrix Regression

Aur\'elie Labbe, Karim Oualkacha, Khaled Fouda

arxiv:2606.26325 v1 · 2026-06-24 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5CU4HYWBL5BHMZMVEZW7ROS4PC}

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	2026-06-26T00:15:36.617215Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8a9c3e2c15f42766595266df8ba5c78ab4667a5c39a65ce45c31871c847b37d

Aliases

arxiv: 2606.26325 · arxiv_version: 2606.26325v1 · doi: 10.48550/arxiv.2606.26325 · pith_short_12: 5CU4HYWBL5BH · pith_short_16: 5CU4HYWBL5BHMZMV · pith_short_8: 5CU4HYWB

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/5CU4HYWBL5BHMZMVEZW7ROS4PC \
  | 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: e8a9c3e2c15f42766595266df8ba5c78ab4667a5c39a65ce45c31871c847b37d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ceffabaecdadc1dd6511edfa608d775ee6a5c7247ec6c57e32cc22fd3566ea4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2026-06-24T19:10:17Z",
    "title_canon_sha256": "e92f0b12d06879b071a5a4642402fab2f63ad2d31e3e089be7f8870f309416ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.26325",
    "kind": "arxiv",
    "version": 1
  }
}