Pith Number

pith:I6OZGSJF

pith:2025:I6OZGSJFCMA5CNNB6UM77YJV2X

not attested not anchored not stored refs pending

What is a Sketch-and-Precondition Derivation for Low-Rank Approximation? Inverse Power Error or Inverse Power Estimation?

Ruihan Xu, Yiping Lu

arxiv:2502.07993 v2 · 2025-02-11 · math.NA · cs.CC · cs.LG · cs.NA · stat.CO · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I6OZGSJFCMA5CNNB6UM77YJV2X}

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	2026-07-05T11:07:20.389630Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

479d9349251301d135a1f519ffe135d5c5a6b520c111d581999f965620d39052

Aliases

arxiv: 2502.07993 · arxiv_version: 2502.07993v2 · doi: 10.48550/arxiv.2502.07993 · pith_short_12: I6OZGSJFCMA5 · pith_short_16: I6OZGSJFCMA5CNNB · pith_short_8: I6OZGSJF

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/I6OZGSJFCMA5CNNB6UM77YJV2X \
  | 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: 479d9349251301d135a1f519ffe135d5c5a6b520c111d581999f965620d39052

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "747ff5454ed7beea425ca927aa369a9b4f826c7baf9d46a25a24a6b73ba2cb5b",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.LG",
      "cs.NA",
      "stat.CO",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-02-11T22:19:56Z",
    "title_canon_sha256": "a777cef2877b124c5684bce55e8404de71381f0ebe477a173a3ffae4ea00e0ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.07993",
    "kind": "arxiv",
    "version": 2
  }
}