Pith Number

pith:RJOCQLUX

pith:2022:RJOCQLUXAJIP5YJTNAPZQBBWWS

not attested not anchored not stored refs pending

On the Rellich eigendecomposition of para-Hermitian matrices and the sign characteristics of $*$-palindromic matrix polynomials

Giovanni Barbarino, Vanni Noferini

arxiv:2211.15539 v1 · 2022-11-28 · math.CV · cs.NA · math.AC · 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{RJOCQLUXAJIP5YJTNAPZQBBWWS}

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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	2026-07-05T05:20:05.429420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a5c282e970250fee133681f980436b4ad2f25583f4fbeddb096d44d11568e9e

Aliases

arxiv: 2211.15539 · arxiv_version: 2211.15539v1 · doi: 10.48550/arxiv.2211.15539 · pith_short_12: RJOCQLUXAJIP · pith_short_16: RJOCQLUXAJIP5YJT · pith_short_8: RJOCQLUX

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/RJOCQLUXAJIP5YJTNAPZQBBWWS \
  | 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: 8a5c282e970250fee133681f980436b4ad2f25583f4fbeddb096d44d11568e9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf37ba64a6acaa2a3609ee9cce304099a2ea1e5efa3e69a1ea7094a6f8c3be8e",
    "cross_cats_sorted": [
      "cs.NA",
      "math.AC",
      "math.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2022-11-28T16:44:32Z",
    "title_canon_sha256": "efd774862975ffaf97106bde42eb2236376f18ebb0859c16d0ac59da31f4e1d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2211.15539",
    "kind": "arxiv",
    "version": 1
  }
}