Pith Number

pith:ROHAIZOP

pith:2025:ROHAIZOPMGAQWXFQXFDD5OH3GO

not attested not anchored not stored refs pending

A Randomized Algorithm for Sparse PCA based on the Basic SDP Relaxation

Alberto Del Pia, Dekun Zhou

arxiv:2507.09148 v2 · 2025-07-12 · stat.ML · cs.LG · 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{ROHAIZOPMGAQWXFQXFDD5OH3GO}

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	2026-05-20T00:02:05.558080Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b8e0465cf61810b5cb0b9463eb8fb3381cbb160351202242b720588e5d7bcca

Aliases

arxiv: 2507.09148 · arxiv_version: 2507.09148v2 · doi: 10.48550/arxiv.2507.09148 · pith_short_12: ROHAIZOPMGAQ · pith_short_16: ROHAIZOPMGAQWXFQ · pith_short_8: ROHAIZOP

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/ROHAIZOPMGAQWXFQXFDD5OH3GO \
  | 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: 8b8e0465cf61810b5cb0b9463eb8fb3381cbb160351202242b720588e5d7bcca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "632b255266b646549f0327bb1a8004ee3b1e121b148c1b08586fcfcb9c1500fa",
    "cross_cats_sorted": [
      "cs.LG",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2025-07-12T05:43:56Z",
    "title_canon_sha256": "809b8b27c727b9287fdcda50add46959760a5b0c879a41969e29fb198527bb31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.09148",
    "kind": "arxiv",
    "version": 2
  }
}