Pith Number

pith:LDWNKIVD

pith:2026:LDWNKIVDYVMUKMR5JGMQNNXFKI

not attested not anchored not stored refs pending

Manifold-based Algorithms for the Hadamard Decomposition

Arnaud Vandaele, Nicolas Gillis, Stefano Sicilia, Subhayan Saha

arxiv:2605.28980 v1 · 2026-05-27 · math.OC · cs.LG · cs.NA · eess.SP · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LDWNKIVDYVMUKMR5JGMQNNXFKI}

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	2026-05-29T01:04:42.335611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58ecd522a3c55945323d499906b6e55216a09c163ffaca723f8a9825eeaa5216

Aliases

arxiv: 2605.28980 · arxiv_version: 2605.28980v1 · doi: 10.48550/arxiv.2605.28980 · pith_short_12: LDWNKIVDYVMU · pith_short_16: LDWNKIVDYVMUKMR5 · pith_short_8: LDWNKIVD

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/LDWNKIVDYVMUKMR5JGMQNNXFKI \
  | 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: 58ecd522a3c55945323d499906b6e55216a09c163ffaca723f8a9825eeaa5216

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15ec96e2ff5fad73417bd33d464460c587cf6f3ee22d4faf7cbfdb669130f34c",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "eess.SP",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2026-05-27T18:35:40Z",
    "title_canon_sha256": "95c5967eb335eab342157771b01c48c1d71c8faef32b3fc6e9ab9380f739e93c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28980",
    "kind": "arxiv",
    "version": 1
  }
}