Pith Number

pith:MFFDQ5J3

pith:2017:MFFDQ5J3GJMJYGCO2HJSPX3JTH

not attested not anchored not stored refs pending

Superfast CUR Matrix Algorithms, Their Pre-Processing and Extensions

John Svadlenka, Liang Zhao, Qi Luan, Victor Y. Pan

arxiv:1710.07946 v6 · 2017-10-22 · 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{MFFDQ5J3GJMJYGCO2HJSPX3JTH}

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	2026-05-18T00:14:06.637994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

614a38753b32589c184ed1d327df6999da18912de33d9993bfe6652f27b7f429

Aliases

arxiv: 1710.07946 · arxiv_version: 1710.07946v6 · doi: 10.48550/arxiv.1710.07946 · pith_short_12: MFFDQ5J3GJMJ · pith_short_16: MFFDQ5J3GJMJYGCO · pith_short_8: MFFDQ5J3

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/MFFDQ5J3GJMJYGCO2HJSPX3JTH \
  | 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: 614a38753b32589c184ed1d327df6999da18912de33d9993bfe6652f27b7f429

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce6079355807f7afca555e2961fc787b3c16045ea45fe1d1af74448769f05afc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-10-22T14:11:33Z",
    "title_canon_sha256": "d43f7ddb28f435906ffab22cf9b261317c422e3f32ead1f56c3ddc322852c484"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.07946",
    "kind": "arxiv",
    "version": 6
  }
}