Pith Number

pith:L2IOSQNW

pith:2017:L2IOSQNWIID7Z2UJT7YI6PURZA

not attested not anchored not stored refs pending

Look-Ahead in the Two-Sided Reduction to Compact Band Forms for Symmetric Eigenvalue Problems and the SVD

Andr\'es E. Tom\'as, Enrique S. Quintana-Ort\'i, Jos\'e R. Herrero, Rafael Rodr\'iguez-S\'anchez, Sandra Catal\'an

arxiv:1709.00302 v2 · 2017-09-01 · cs.MS · cs.DC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L2IOSQNWIID7Z2UJT7YI6PURZA}

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	2026-05-18T00:31:18.800380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e90e941b64207fcea899ff08f3e91c80773861f566afa868cf50514bb3c88c3

Aliases

arxiv: 1709.00302 · arxiv_version: 1709.00302v2 · doi: 10.48550/arxiv.1709.00302 · pith_short_12: L2IOSQNWIID7 · pith_short_16: L2IOSQNWIID7Z2UJ · pith_short_8: L2IOSQNW

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/L2IOSQNWIID7Z2UJT7YI6PURZA \
  | 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: 5e90e941b64207fcea899ff08f3e91c80773861f566afa868cf50514bb3c88c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "592ce641db54e14e88e68a5d508bd70ae0e94d539bdd7d118ee75fa2732765a7",
    "cross_cats_sorted": [
      "cs.DC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2017-09-01T13:34:32Z",
    "title_canon_sha256": "2f4756ff99c602a53cecefc182d07256ab7be5ed0981a805e5d8d5f97f9b67a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.00302",
    "kind": "arxiv",
    "version": 2
  }
}