Pith Number

pith:7GZGW2YD

pith:2015:7GZGW2YD5Z5QCY6SFO7ZOXOUQZ

not attested not anchored not stored refs pending

A Simple Approach to Optimal CUR Decomposition

Haishan Ye, Yujun Li, Zhihua Zhang

arxiv:1511.01598 v4 · 2015-11-05 · 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{7GZGW2YD5Z5QCY6SFO7ZOXOUQZ}

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	2026-05-18T00:50:01.800950Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9b26b6b03ee7b0163d22bbf975dd48677c3a818a6c7195f192cb46ea988a305

Aliases

arxiv: 1511.01598 · arxiv_version: 1511.01598v4 · doi: 10.48550/arxiv.1511.01598 · pith_short_12: 7GZGW2YD5Z5Q · pith_short_16: 7GZGW2YD5Z5QCY6S · pith_short_8: 7GZGW2YD

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/7GZGW2YD5Z5QCY6SFO7ZOXOUQZ \
  | 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: f9b26b6b03ee7b0163d22bbf975dd48677c3a818a6c7195f192cb46ea988a305

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd275096c5c4de576706635b684addc368ace1dc5c4bb5230e81bd62c7d364ec",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2015-11-05T03:48:28Z",
    "title_canon_sha256": "12e14b58b7c73d58babfa733ccfedbcbcd0f4256fc7529b0c2191f03c0c4bc45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.01598",
    "kind": "arxiv",
    "version": 4
  }
}