Pith Number

pith:3J5WXYNJ

pith:2025:3J5WXYNJWDM4K2N2BE7HBI7O2X

not attested not anchored not stored refs pending

Computing matrix functions associated with a Hermitian--definite pencil

Bruno Iannazzo, Dario A. Bini, Massimiliano Fasi

arxiv:2510.16473 v2 · 2025-10-18 · 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{3J5WXYNJWDM4K2N2BE7HBI7O2X}

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	2026-05-25T02:02:09.565015Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da7b6be1a9b0d9c569ba093e70a3eed5e60b12a8b935de1d96cb264b56d65f5b

Aliases

arxiv: 2510.16473 · arxiv_version: 2510.16473v2 · doi: 10.48550/arxiv.2510.16473 · pith_short_12: 3J5WXYNJWDM4 · pith_short_16: 3J5WXYNJWDM4K2N2 · pith_short_8: 3J5WXYNJ

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/3J5WXYNJWDM4K2N2BE7HBI7O2X \
  | 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: da7b6be1a9b0d9c569ba093e70a3eed5e60b12a8b935de1d96cb264b56d65f5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c93e322a4155f793c028481188f4bb949b2b136504abbc113739d16428bc51c",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-10-18T12:41:11Z",
    "title_canon_sha256": "b3f25566ae08c80ae83f0b0a4e6f009cb5c46413cc5baa8314c4f1dd9fae4cad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2510.16473",
    "kind": "arxiv",
    "version": 2
  }
}