Pith Number

pith:PUSVUI4A

pith:2025:PUSVUI4AST2SCZUOADJJBHQFW3

not attested not anchored not stored refs pending

Faster Linear Algebra Algorithms with Structured Random Matrices

Chris Cama\~no, Ethan N. Epperly, Joel A. Tropp, Raphael A. Meyer

arxiv:2508.21189 v1 · 2025-08-28 · cs.DS · cs.NA · 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{PUSVUI4AST2SCZUOADJJBHQFW3}

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.

Cited by

4 papers in Pith

Well-invertible column subsets of sparse matrices are rare

Randomized Sketching is Robust to Low-Precision Rounding on GPUs

Sharp analysis of sketched least squares and randomized low-rank approximation

Oblivious Subspace Injection Is Not Enough for Relative Error

Receipt and verification

First computed	2026-07-05T12:01:29.712995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d255a238094f521668e00d2909e05b6dd451bf500f8f165c5a3ee5d7064fde7

Aliases

arxiv: 2508.21189 · arxiv_version: 2508.21189v1 · doi: 10.48550/arxiv.2508.21189 · pith_short_12: PUSVUI4AST2S · pith_short_16: PUSVUI4AST2SCZUO · pith_short_8: PUSVUI4A

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/PUSVUI4AST2SCZUOADJJBHQFW3 \
  | 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: 7d255a238094f521668e00d2909e05b6dd451bf500f8f165c5a3ee5d7064fde7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4caab57b4edcec162197f2908b286acfe81ee3281a4ad69afb95f6ea5a13a98",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2025-08-28T20:02:15Z",
    "title_canon_sha256": "db753edab03ffe908856a9a866b2938c1653a16d0f677d161ed8ee0977c5f67f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.21189",
    "kind": "arxiv",
    "version": 1
  }
}