Pith Number

pith:YB2U5PRB

pith:2016:YB2U5PRB3JAV2BA6HMQI72UWD5

not attested not anchored not stored refs pending

Faster Kernel Ridge Regression Using Sketching and Preconditioning

David P. Woodruff, Haim Avron, Kenneth L. Clarkson

arxiv:1611.03220 v4 · 2016-11-10 · cs.NA · cs.DS · cs.LG · 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{YB2U5PRB3JAV2BA6HMQI72UWD5}

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	2026-05-18T00:40:17.424858Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0754ebe21da415d041e3b208fea961f5c0660fb49e79114c6d0cd5ddd3b30ae

Aliases

arxiv: 1611.03220 · arxiv_version: 1611.03220v4 · doi: 10.48550/arxiv.1611.03220 · pith_short_12: YB2U5PRB3JAV · pith_short_16: YB2U5PRB3JAV2BA6 · pith_short_8: YB2U5PRB

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/YB2U5PRB3JAV2BA6HMQI72UWD5 \
  | 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: c0754ebe21da415d041e3b208fea961f5c0660fb49e79114c6d0cd5ddd3b30ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ef43c0f5a8ee445446a6f363f53f69036ff66eb60fcaf990b3a3893eba49149",
    "cross_cats_sorted": [
      "cs.DS",
      "cs.LG",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2016-11-10T08:50:05Z",
    "title_canon_sha256": "4c42475afe5a0a549fb74d314c0fb2bb30ac835a76bec8a34cb425c3e6c13758"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.03220",
    "kind": "arxiv",
    "version": 4
  }
}