Pith Number

pith:REOKEWRP

pith:2013:REOKEWRPZX5N6VTEIZ3CFSDO62

not attested not anchored not stored refs pending

Improved Accuracy and Parallelism for MRRR-based Eigensolvers -- A Mixed Precision Approach

((1) AICES, (2) Universidad Jaume I), Enrique Quintana-Orti (2), Matthias Petschow (1), Paolo Bientinesi (1), RWTH Aachen

arxiv:1304.1864 v3 · 2013-04-06 · cs.NA · cs.MS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{REOKEWRPZX5N6VTEIZ3CFSDO62}

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	2026-05-18T03:20:09.088995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

891ca25a2fcdfadf5664467622c86ef6ae97417f314c4630ea60ff3ebeccbe00

Aliases

arxiv: 1304.1864 · arxiv_version: 1304.1864v3 · doi: 10.48550/arxiv.1304.1864 · pith_short_12: REOKEWRPZX5N · pith_short_16: REOKEWRPZX5N6VTE · pith_short_8: REOKEWRP

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/REOKEWRPZX5N6VTEIZ3CFSDO62 \
  | 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: 891ca25a2fcdfadf5664467622c86ef6ae97417f314c4630ea60ff3ebeccbe00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31b771613ade26253a6be1928cd649bedb0e487858c1ac404ce869290b5069dd",
    "cross_cats_sorted": [
      "cs.MS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2013-04-06T08:14:25Z",
    "title_canon_sha256": "83279455676f5b4f5ecad47bcbae416ea7044a45964110ef8a412cb67223b2f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.1864",
    "kind": "arxiv",
    "version": 3
  }
}