Pith Number

pith:DIKYBY7Y

pith:2026:DIKYBY7YV4YPUIR7XENPDR36T7

not attested not anchored not stored refs pending

An indefinite LOBPCG type of algorithm for detecting a definite Hermitian matrix pair

Marija Milolo\v{z}a Pandur

arxiv:2606.04259 v1 · 2026-06-02 · math.NA · cs.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{DIKYBY7YV4YPUIR7XENPDR36T7}

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	2026-06-04T01:09:00.696663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a1580e3f8af30fa223fb91af1c77e9ff74d0582deb30c96760f5c814c7743e2

Aliases

arxiv: 2606.04259 · arxiv_version: 2606.04259v1 · doi: 10.48550/arxiv.2606.04259 · pith_short_12: DIKYBY7YV4YP · pith_short_16: DIKYBY7YV4YPUIR7 · pith_short_8: DIKYBY7Y

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/DIKYBY7YV4YPUIR7XENPDR36T7 \
  | 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: 1a1580e3f8af30fa223fb91af1c77e9ff74d0582deb30c96760f5c814c7743e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2934803891f99da5c345f6d55a3e4076b8b81307a4397607e23a2a4810c6601",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-06-02T22:24:49Z",
    "title_canon_sha256": "efbba272b6fe65669e3e467e10012758f98787f94eead9853014ad593d9637b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.04259",
    "kind": "arxiv",
    "version": 1
  }
}