Pith Number

pith:KDZPKEQE

pith:2017:KDZPKEQESJ2MNZ4KHAYOECKRCZ

not attested not anchored not stored refs pending

iSIRA: Integrated Shift-Invert Residual Arnoldi Method for Graph Laplacian Matrices from Big Data

Henry Horng-Shing Lu, Shing-Tung Yau, Wei-Qiang Huang, Wen-Wei Lin

arxiv:1710.07080 v2 · 2017-10-19 · 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{KDZPKEQESJ2MNZ4KHAYOECKRCZ}

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	2026-05-18T00:02:45.551620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50f2f512049274c6e78a3830e2095116420782aa9810cfe201bad60065a16dd3

Aliases

arxiv: 1710.07080 · arxiv_version: 1710.07080v2 · doi: 10.48550/arxiv.1710.07080 · pith_short_12: KDZPKEQESJ2M · pith_short_16: KDZPKEQESJ2MNZ4K · pith_short_8: KDZPKEQE

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/KDZPKEQESJ2MNZ4KHAYOECKRCZ \
  | 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: 50f2f512049274c6e78a3830e2095116420782aa9810cfe201bad60065a16dd3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "501c4e01dc22777ba2b00c9454e21036f33003e508d7b575826cf5e132a20d9e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-10-19T10:57:07Z",
    "title_canon_sha256": "2996fb055f075d30b9a3d9866e5f98e1f9724b8253b10d15f7311fdee542387f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.07080",
    "kind": "arxiv",
    "version": 2
  }
}