Pith Number

pith:DXIVVHOC

pith:2025:DXIVVHOCF75KFNVHPIESLE775D

not attested not anchored not stored refs pending

On computing sparse universal solvers for key problems in statistics

Ananias Sousa Machado, Jon Lee, Marcia Fampa

arxiv:2509.04264 v2 · 2025-09-04 · 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{DXIVVHOCF75KFNVHPIESLE775D}

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	2026-06-19T16:10:31.016675Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1dd15a9dc22ffaa2b6a77a092593ffe8dbd0ea5cdb82c3096222cffbda614d96

Aliases

arxiv: 2509.04264 · arxiv_version: 2509.04264v2 · doi: 10.48550/arxiv.2509.04264 · pith_short_12: DXIVVHOCF75K · pith_short_16: DXIVVHOCF75KFNVH · pith_short_8: DXIVVHOC

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/DXIVVHOCF75KFNVHPIESLE775D \
  | 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: 1dd15a9dc22ffaa2b6a77a092593ffe8dbd0ea5cdb82c3096222cffbda614d96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "650ec8519a03e11ab9a4632602e1a019b0e127f789c1f1147accfae93bb7e9ff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2025-09-04T14:42:13Z",
    "title_canon_sha256": "c1e2c162d28dd4c80c5ba417e1c4e91a061fb45e864a1d6b66829e3ea07896b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.04264",
    "kind": "arxiv",
    "version": 2
  }
}