Pith Number

pith:UQNUJGPZ

pith:2022:UQNUJGPZAIMCXJZWZQEJKUZRR3

not attested not anchored not stored refs pending

An analysis of the Rayleigh-Ritz and refined Rayleigh-Ritz methods for regular nonlinear eigenvalue problems

Qingqing Zheng, Zhongxiao Jia

arxiv:2212.00302 v3 · 2022-12-01 · 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{UQNUJGPZAIMCXJZWZQEJKUZRR3}

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	2026-05-18T03:09:47.455649Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a41b4499f902182ba736cc089553318eeb5780724f053fa902503a5065ea5ab5

Aliases

arxiv: 2212.00302 · arxiv_version: 2212.00302v3 · doi: 10.48550/arxiv.2212.00302 · pith_short_12: UQNUJGPZAIMC · pith_short_16: UQNUJGPZAIMCXJZW · pith_short_8: UQNUJGPZ

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/UQNUJGPZAIMCXJZWZQEJKUZRR3 \
  | 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: a41b4499f902182ba736cc089553318eeb5780724f053fa902503a5065ea5ab5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a4cd9523f9c72a2e031f6d9aaa677f3e3f5a61dab583470384b330871c1f09c",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2022-12-01T06:19:47Z",
    "title_canon_sha256": "468a653a5a4c3e5d9f1a25d69f9cc5832e2e7e5d504a3bba89f723156f7c1bd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2212.00302",
    "kind": "arxiv",
    "version": 3
  }
}