Pith Number

pith:5B6SHJOF

pith:2026:5B6SHJOFGIF4U2DBEKRSLNY6Q3

not attested not anchored not stored refs pending

An Exterior Method for Nonnegative Matrix Factorization

Ehsan Ebrahimzadeh, Kartik Sharma, Qiujing Lu, Tonmoy Monsoor, Vwani Roychowdhury

arxiv:2605.19325 v1 · 2026-05-19 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5B6SHJOFGIF4U2DBEKRSLNY6Q3}

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	2026-05-20T01:05:39.382247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e87d23a5c5320bca686122a325b71e86c8f59a993a5d268ec0d24cfc5726e253

Aliases

arxiv: 2605.19325 · arxiv_version: 2605.19325v1 · doi: 10.48550/arxiv.2605.19325 · pith_short_12: 5B6SHJOFGIF4 · pith_short_16: 5B6SHJOFGIF4U2DB · pith_short_8: 5B6SHJOF

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/5B6SHJOFGIF4U2DBEKRSLNY6Q3 \
  | 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: e87d23a5c5320bca686122a325b71e86c8f59a993a5d268ec0d24cfc5726e253

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40cb74eb51242897dc67b95bd8d42848bc0fe8736f8ae2128917d01d10b998a1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-05-19T04:03:11Z",
    "title_canon_sha256": "610c4b343c692d40e415c184bd5aa7d6c0ff8afa05543ff31d5d7e88aaffdebf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.19325",
    "kind": "arxiv",
    "version": 1
  }
}