Pith Number

pith:7B4SVP6W

pith:2015:7B4SVP6WM4ONXG5CSN7WLMPSHB

not attested not anchored not stored refs pending

Restarted Hessenberg method for solving shifted nonsymmetric linear systems

Bruno Carpentieri, Chun Wen, Guojian Yin, Lei Du, Ting-Zhu Huang, Xian-Ming Gu

arxiv:1507.08141 v6 · 2015-07-29 · 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{7B4SVP6WM4ONXG5CSN7WLMPSHB}

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	2026-06-04T17:09:26.192197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8792abfd6671cdb9ba2937f65b1f23850b90bf6ceacf8dad420b304a1c97cee

Aliases

arxiv: 1507.08141 · arxiv_version: 1507.08141v6 · doi: 10.48550/arxiv.1507.08141 · pith_short_12: 7B4SVP6WM4ON · pith_short_16: 7B4SVP6WM4ONXG5C · pith_short_8: 7B4SVP6W

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/7B4SVP6WM4ONXG5CSN7WLMPSHB \
  | 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: f8792abfd6671cdb9ba2937f65b1f23850b90bf6ceacf8dad420b304a1c97cee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e8bef499c9a4522e82221101bea4cafc9f0a7ffddbbea34c69f2073e5354495",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-07-29T13:40:28Z",
    "title_canon_sha256": "f82392a9c56077fa66b05447303a7813aa21102bbe220a74e1f5ddedbcb1c2b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.08141",
    "kind": "arxiv",
    "version": 6
  }
}