Pith Number

pith:BS7LPZ3F

pith:2021:BS7LPZ3F7V5JYAE6FHRTMMB7YR

not attested not anchored not stored refs pending

Randomized Nystr\"om Preconditioning

Joel A. Tropp, Madeleine Udell, Zachary Frangella

arxiv:2110.02820 v2 · 2021-10-06 · math.NA · cs.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{BS7LPZ3F7V5JYAE6FHRTMMB7YR}

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

1 paper in Pith

Approaching Optimality for Solving Dense Linear Systems with Low-Rank Structure

Receipt and verification

First computed	2026-07-05T03:41:41.265392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0cbeb7e765fd7a9c009e29e336303fc444076f62f5226cc979666616b92cee5e

Aliases

arxiv: 2110.02820 · arxiv_version: 2110.02820v2 · doi: 10.48550/arxiv.2110.02820 · pith_short_12: BS7LPZ3F7V5J · pith_short_16: BS7LPZ3F7V5JYAE6 · pith_short_8: BS7LPZ3F

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/BS7LPZ3F7V5JYAE6FHRTMMB7YR \
  | 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: 0cbeb7e765fd7a9c009e29e336303fc444076f62f5226cc979666616b92cee5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c43fe58ab869c1a020407d1064675992d867bba32f27aa3f57f015a640d1a25",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-10-06T14:46:16Z",
    "title_canon_sha256": "f2cf746f0421960a0a60305f492dca4d89c9d4bd62ce0458e52fec2731373bc0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.02820",
    "kind": "arxiv",
    "version": 2
  }
}