Pith Number

pith:MCF5IQX6

pith:2025:MCF5IQX6Y7T7WJHAZBAGYORYTY

not attested not anchored not stored refs pending

Finding Maximum Determinant Principal Submatrices via Hadamard Bounds and Projection Methods

Hao Hu, Henry Wolkowicz, Hugo J. Woerdeman, Stefan Sremac

arxiv:2508.15608 v2 · 2025-08-21 · 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{MCF5IQX6Y7T7WJHAZBAGYORYTY}

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	2026-05-26T01:03:14.305717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

608bd442fec7e7fb24e0c8406c3a389e290b92fa683d0c920063974a03e34470

Aliases

arxiv: 2508.15608 · arxiv_version: 2508.15608v2 · doi: 10.48550/arxiv.2508.15608 · pith_short_12: MCF5IQX6Y7T7 · pith_short_16: MCF5IQX6Y7T7WJHA · pith_short_8: MCF5IQX6

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/MCF5IQX6Y7T7WJHAZBAGYORYTY \
  | 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: 608bd442fec7e7fb24e0c8406c3a389e290b92fa683d0c920063974a03e34470

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b7b0b44e1ec82a1bc56f6de91d4f7c9a5ef129c916047b701643e5235e6de6b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2025-08-21T14:34:34Z",
    "title_canon_sha256": "4d219f9917cf51f575862bd49ea56792c86375b890e213b091d53e7af155e49e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.15608",
    "kind": "arxiv",
    "version": 2
  }
}