Pith Number

pith:OQJYPFMM

pith:2021:OQJYPFMML4XXOS4BVRG5CNQKTU

not attested not anchored not stored refs pending

Boolean Matrix Factorization via Nonnegative Auxiliary Optimization

Boian Alexandrov, Derek DeSantis, Duc P. Truong, Erik Skau

arxiv:2106.04708 v1 · 2021-06-08 · cs.DS · cs.LG · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OQJYPFMML4XXOS4BVRG5CNQKTU}

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	2026-07-05T03:09:07.035458Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

741387958c5f2f774b81ac4dd1360a9d23358ff4f982421eae860c4e18c35d19

Aliases

arxiv: 2106.04708 · arxiv_version: 2106.04708v1 · doi: 10.48550/arxiv.2106.04708 · pith_short_12: OQJYPFMML4XX · pith_short_16: OQJYPFMML4XXOS4B · pith_short_8: OQJYPFMM

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/OQJYPFMML4XXOS4BVRG5CNQKTU \
  | 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: 741387958c5f2f774b81ac4dd1360a9d23358ff4f982421eae860c4e18c35d19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "322bd1093729fa6b2d1972c18e31264216275dc5fb3ad4f07caf87c599a18268",
    "cross_cats_sorted": [
      "cs.LG",
      "math.OC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2021-06-08T21:55:49Z",
    "title_canon_sha256": "d03ed7887ecf303549834369b5cf06ccb6cd4d4a517ee28e5f18b2b901174c99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.04708",
    "kind": "arxiv",
    "version": 1
  }
}