Pith Number

pith:W7PWUQZH

pith:2012:W7PWUQZHXAQ2ONADCAK6R64SWQ

not attested not anchored not stored refs pending

On Implementation and Evaluation of Inverse Iteration Algorithm with compact WY Orthogonalization

Hiroyuki Ishigami, Kinji Kimura, Yoshimasa Nakamura

arxiv:1209.1910 v1 · 2012-09-10 · cs.NA · 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{W7PWUQZHXAQ2ONADCAK6R64SWQ}

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	2026-05-18T03:45:54.085331Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7df6a4327b821a734031015e8fb92b41303147977fe9c0ea670fe66aa7949aa

Aliases

arxiv: 1209.1910 · arxiv_version: 1209.1910v1 · doi: 10.48550/arxiv.1209.1910 · pith_short_12: W7PWUQZHXAQ2 · pith_short_16: W7PWUQZHXAQ2ONAD · pith_short_8: W7PWUQZH

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/W7PWUQZHXAQ2ONADCAK6R64SWQ \
  | 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: b7df6a4327b821a734031015e8fb92b41303147977fe9c0ea670fe66aa7949aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a156a7a713cd1d0c2bd78c64f34453d4e541e67d1ab8ba3d3027dae205f5baea",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2012-09-10T09:04:13Z",
    "title_canon_sha256": "de72d750862f07111d1ab08bfb3a10e82adce017acd849e15c3b5000cff29db7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1910",
    "kind": "arxiv",
    "version": 1
  }
}