Pith Number

pith:HRDMWGRL

pith:2026:HRDMWGRL47XWTLLPJWVLSEHARN

not attested not anchored not stored refs pending

A Jacobi-like algorithm for normal matrices by the skew-symmetric part

P.-A. Absil, Simon Mataigne

arxiv:2605.26317 v1 · 2026-05-25 · 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{HRDMWGRL47XWTLLPJWVLSEHARN}

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	2026-05-27T01:05:11.704036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c46cb1a2be7ef69ad6f4daab910e08b4a6e9d92ba4d5baaafff82e4d90a803b

Aliases

arxiv: 2605.26317 · arxiv_version: 2605.26317v1 · doi: 10.48550/arxiv.2605.26317 · pith_short_12: HRDMWGRL47XW · pith_short_16: HRDMWGRL47XWTLLP · pith_short_8: HRDMWGRL

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/HRDMWGRL47XWTLLPJWVLSEHARN \
  | 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: 3c46cb1a2be7ef69ad6f4daab910e08b4a6e9d92ba4d5baaafff82e4d90a803b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6dabadb6d81c25125bd3633a8bb7e7e97877c201373cfddf9eaa46a05b8140b5",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-05-25T20:17:07Z",
    "title_canon_sha256": "c10cead30c1d2af081153ca3898ecaf46910709c1113d80e779bd7cacca84ba1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.26317",
    "kind": "arxiv",
    "version": 1
  }
}